WO2005124758A1 - プローブ、並びに記録装置、再生装置及び記録再生装置 - Google Patents
プローブ、並びに記録装置、再生装置及び記録再生装置 Download PDFInfo
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- WO2005124758A1 WO2005124758A1 PCT/JP2005/010884 JP2005010884W WO2005124758A1 WO 2005124758 A1 WO2005124758 A1 WO 2005124758A1 JP 2005010884 W JP2005010884 W JP 2005010884W WO 2005124758 A1 WO2005124758 A1 WO 2005124758A1
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- probe
- recording
- dielectric
- recording medium
- medium
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
- G11B9/12—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using near-field interactions; Record carriers therefor
- G11B9/14—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using near-field interactions; Record carriers therefor using microscopic probe means, i.e. recording or reproducing by means directly associated with the tip of a microscopic electrical probe as used in Scanning Tunneling Microscopy [STM] or Atomic Force Microscopy [AFM] for inducing physical or electrical perturbations in a recording medium; Record carriers or media specially adapted for such transducing of information
- G11B9/1418—Disposition or mounting of heads or record carriers
- G11B9/1427—Disposition or mounting of heads or record carriers with provision for moving the heads or record carriers relatively to each other or for access to indexed parts without effectively imparting a relative movement
- G11B9/1436—Disposition or mounting of heads or record carriers with provision for moving the heads or record carriers relatively to each other or for access to indexed parts without effectively imparting a relative movement with provision for moving the heads or record carriers relatively to each other
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
- G11B9/02—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using ferroelectric record carriers; Record carriers therefor
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
- G11B9/12—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using near-field interactions; Record carriers therefor
- G11B9/14—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using near-field interactions; Record carriers therefor using microscopic probe means, i.e. recording or reproducing by means directly associated with the tip of a microscopic electrical probe as used in Scanning Tunneling Microscopy [STM] or Atomic Force Microscopy [AFM] for inducing physical or electrical perturbations in a recording medium; Record carriers or media specially adapted for such transducing of information
- G11B9/1409—Heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
Definitions
- Probe recording device, reproducing device, and recording / reproducing device
- the present invention relates to a probe for recording and reproducing polarization information recorded on a dielectric such as a ferroelectric recording medium, and a recording apparatus, a reproducing apparatus and a recording / reproducing apparatus using the probe. About.
- the inventors of the present application have proposed a technique of a recording / reproducing apparatus using SNDM (Scanning Nonlinear Dielectric Microscopy) for analyzing a dielectric recording medium on a nanoscale.
- SNDM Sccanning Nonlinear Dielectric Microscopy
- AFM Atomic Force Microscopy
- the oscillation frequency changes with the alternating electric field, and
- the rate of change of the oscillation frequency including, is determined by the nonlinear dielectric constant of the ferroelectric material immediately below the probe.
- FM Frequency Modulation
- the component caused by the alternating electric field is FM demodulated and extracted.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2003-085969
- the probe used in such a recording / reproducing apparatus records and reproduces information by bringing the tip of the protruding portion into contact with or close to a state in which the tip of the protrusion contacts or can be regarded as being in contact with the dielectric recording medium. .
- the protrusion comes into contact with the dielectric recording medium or the like, there is a technical problem that the protrusion is worn out, and as a result, the operating life of the probe is shortened.
- a multi-probe provided with a plurality of protrusions for improving the information recording speed'reproduction speed can be used.
- a multi-probe it is desired that a plurality of protrusions come into contact with the dielectric recording medium at the same time in order to stabilize the recording operation and the reproducing operation.
- the present invention has been made in view of, for example, the above-described problems, and has as its object to provide, for example, a probe having a relatively long operating life, and a recording device, a reproducing device, and a recording and reproducing device using the probe. And
- a first probe of the present invention includes a substrate having a surface facing a medium, and a point electrode formed in the substrate and for detecting and / or changing a state of a minute region in the medium.
- a tip of the point electrode which is an end on the side facing the medium, is disposed at a point in a plane formed by the surface around a region where the point electrode is formed. You. [0010]
- a predetermined electric field or voltage or current, etc.
- a predetermined electric field is applied to the point electrode via the medium.
- an electric change can be detected at a point electrode.
- a dielectric recording medium for example, information is recorded on a dielectric recording medium to be described later (for example, a state of a minute area in the dielectric recording medium is changed), or reproduction of information recorded on the dielectric recording medium is performed.
- the point electrode is formed in the substrate (that is, in a hole formed in the substrate as described later, on the substrate, or the like).
- the point electrode and the medium may be in contact with each other, or may be separated from each other so as to be regarded as being in contact with the medium.
- the term “point electrode” in the present invention means an electrode having a very small size (for example, a size on the order of nanometers or sub-micrometers as described later). Do not need to be a point.
- the tip of the point electrode is arranged at a point (ie, a predetermined point) in at least a part of the surface (surface) of the substrate.
- Point electrodes are formed in at least a part of the surface of the substrate.
- the term “periphery of a region portion” means, for example, a region around or near (adjacent to) a portion where a point electrode is formed, in addition to the portion.
- the “tip” of the point electrode is the end of the point electrode on the side facing the medium, for example, the portion of the point electrode that is closest to the medium or actually contacts the medium. Part.
- the tip (particularly a minute tip) of the point electrode formed at one point comes into contact with the medium. Since the tip is formed in at least a part of the surface of the substrate, if the tip contacts the medium or the like, the surface of the substrate (particularly, at least a part of the surface) is similarly formed. Contact.
- the first probe of the present invention physically comes into contact with the medium with a relatively wide flat surface as its boundary surface (or realizes a state that can be regarded as contact) due to the presence of the substrate. be able to. That is, the physical contact area between the probe and the medium can be increased. For this reason, it is possible to suppress or prevent the progress of wear of the probe (that is, the substrate and the point electrode) in which pressure is not locally applied to the point electrode. Therefore, the first of the present invention According to the probe, it is possible to make the operating life relatively long. On the other hand, the first probe of the present invention can electrically contact the medium at the minute tip portion due to the presence of the point electrode. That is, the electrical contact area between the probe and the medium can be reduced. Therefore, for example, in a recording / reproducing apparatus to be described later, it is possible to realize a high-density data recording / reproducing operation.
- the physical contact area between the probe and the medium can be increased, and the electrical contact area can be reduced. Therefore, it is possible to perform a suitable operation (for example, a data recording operation and a data reproducing operation described later) while relatively prolonging the operating life of the probe.
- the point electrode is formed in the substrate continuously from the medium to a predetermined height.
- the point electrode may come into contact with the medium at the tip having a small contact area. It can. That is, a state in which the contact area is electrically small can be maintained, and a probe with a long operating life V can be realized.
- the height of the entire surface from the medium is equal to the height of the medium force of the tip.
- the tip of the point electrode and the substrate surface can be arranged on the same plane. For this reason, the physical contact area can be increased, and the wear of the point electrode (particularly, its tip) can be more effectively prevented. Therefore, the operating life of the probe can be extended.
- the substrate includes at least one of an insulator and a high-resistance member.
- the insulation between the substrate and the point electrode can be relatively easily secured.
- insulation between a plurality of point electrodes can be relatively easily secured.
- the surface is a plane along the medium.
- the probe for example, it is possible to bring the probe into contact with the medium in a suitable state without the substrate and the medium being inclined and coming into contact with each other. For example, it is possible to effectively suppress or prevent the inconvenience that the angular portion of the substrate comes into contact with the medium. Therefore, the physical contact area can be increased, and as a result, the operating life of the probe can be extended.
- the point electrode is formed in a hole provided in the substrate.
- the point electrode may be formed by covering at least a side surface of the hole with a metal film. Further, the point electrode may be formed by covering at least a side surface of the hole with a conductive member. Further, the point electrode may be formed by forming a member containing a carbon nano material inside the hole.
- the substrate and the point electrode be insulated by forming an insulating layer or the like on the side surface of the hole.
- the substrate and the point electrode are preferably insulated by forming an insulating layer or the like at the boundary between the substrate and the point electrode, not limited to the case where the hole is formed to form the point electrode. .
- the substrate itself has insulating properties or high resistance.
- a preliminary hole having a predetermined first diameter is provided on the substrate, and at least a side surface of the preliminary hole is oxidized to thereby provide a preliminary hole.
- the hole having the second diameter smaller than the first diameter is provided.
- the recess is formed on at least a part of the back surface of the substrate opposite to the front surface, and after oxidizing the surface of the recess, the recess is formed. Spare holes are provided.
- a tip portion of the point electrode is in contact with a peripheral member of the substrate forming the region on the surface.
- the point electrode is a micro probe in the medium based on a change in at least one of a voltage applied to the point electrode and a supplied current. At least one of detection and change of the state of the area is performed.
- a predetermined electric field or the like is applied to the medium from the point electrode, or a predetermined electric field or the like is applied to the point electrode via the medium.
- the voltage value or the current value at the point electrode changes, and some electrical change (for example, a change in the voltage value or a change in the current value) is detected. Therefore, it is possible to relatively easily detect the state of the minute area of the medium or to relatively easily change the state of the minute area of the medium in accordance with the electrical change or the like.
- the "applied voltage” and “supplied current” here literally indicate the voltage or current (or electric field) applied or supplied from a DC power supply or an AC power supply.
- a second probe of the present invention includes a substrate having a surface facing a medium, and a plurality of point electrodes formed in the substrate and detecting and / or changing a state of a minute region in the medium.
- a tip of the at least one point electrode of the plurality of point electrodes, which is an end facing the medium, has a surface around a region where the at least one point electrode is formed. It is arranged at one point in the plane to be formed.
- the physical contact area between the probe and the medium can be increased, and the electrical contact can be increased.
- the area can be reduced. Therefore, it is possible to receive the same benefits as those of the first probe of the present invention.
- the second probe of the present invention if the tips of the respective point electrodes are formed at one point in the plane of the region where the respective point electrodes are formed, the respective tips are formed. Can be relatively easily arranged on the same plane as the surface of the substrate. Therefore, even if the probe has a plurality of point electrodes (for example, a multi-probe), it is not necessary to press the probe against the medium in order to arrange the tip of each point electrode on the same plane. It is possible to more effectively suppress or prevent the progress of wear. Therefore, the operating life of the probe can be extended more effectively.
- a plurality of point electrodes for example, a multi-probe
- the second probe of the present invention can also adopt various aspects.
- the recording device of the present invention is a recording device that records data on a dielectric recording medium, and corresponds to the first or second probe of the present invention (including its various aspects) and the data described above.
- Recording signal generating means for generating a recording signal to be generated.
- data recording is performed based on the recording signal generated by the recording signal generating means, while taking advantage of the above-described first or second probe of the present invention. It can be carried out.
- the recording apparatus of the present invention can also adopt various aspects. (Playback device)
- a reproducing apparatus of the present invention is a reproducing apparatus for reproducing data recorded on a dielectric recording medium.
- the reproducing apparatus of the present invention includes the first or second probe of the present invention (including various aspects thereof), Electric field applying means for applying an electric field to the medium recording medium, oscillating means whose oscillation frequency changes according to a difference in capacitance corresponding to the non-linear dielectric constant of the dielectric recording medium, and demodulating an oscillation signal by the oscillating means, Reproduction means for reproducing.
- the reproducing apparatus of the present invention by applying an electric field to the dielectric recording medium by the electric field applying means, the oscillation due to the capacitance change according to the change in the nonlinear dielectric constant of the dielectric recording medium is caused.
- the oscillation frequency of the means changes.
- the reproducing means demodulates and reproduces an oscillating signal corresponding to the change of the oscillating frequency by the oscillating means, thereby reproducing the data.
- data can be reproduced by taking advantage of the above-mentioned advantages of the first or second probe of the present invention.
- the reproducing apparatus of the present invention can also adopt various aspects.
- the recording / reproducing apparatus of the present invention is a recording / reproducing apparatus for recording data on a dielectric recording medium and reproducing the data recorded on the dielectric recording medium, wherein the first or second aspect of the present invention is described.
- a second probe (including its various aspects), a recording signal generating means for generating a recording signal corresponding to the data, an electric field applying means for applying an electric field to the dielectric recording medium, and the dielectric recording
- An oscillation unit whose oscillation frequency changes according to a difference in capacitance corresponding to a nonlinear dielectric constant of a medium, and a reproduction unit that demodulates and reproduces an oscillation signal generated by the oscillation unit.
- the recording / reproducing apparatus of the present invention it is possible to record data and reproduce data while utilizing the advantages of the above-described first or second probe of the present invention. .
- the recording / reproducing apparatus of the present invention can also adopt various aspects, corresponding to the various aspects of the above-described first or second probe of the present invention.
- the probe includes the substrate and the point electrode, and the tip of the point electrode is located near the area where the point electrode is formed. It is arranged at one point in the plane formed by the surface of the substrate.
- the second probe of the present invention it is provided with the substrate and the plurality of point electrodes, and the tip of at least one point electrode is formed on the surface of the substrate around the region where the at least one point electrode is formed It is arranged at one point in the plane formed by. Therefore, the physical contact area between the probe and the medium can be increased, and the electrical contact area can be reduced. As a result, the operating life of the probe can be relatively increased.
- the recording apparatus of the present invention it is provided with the first or second probe of the present invention and a recording signal generating means. Therefore, various benefits of the first or second probe of the present invention can be enjoyed.
- the apparatus includes the first or second probe of the present invention, an electric field applying unit, an oscillating unit, and a reproducing unit. Therefore, various benefits of the first or second probe of the present invention can be enjoyed.
- the apparatus includes the first or second probe of the present invention, a recording signal generating means, an electric field applying means, an oscillating means, and a reproducing means. Therefore, various benefits of the first or second probe of the present invention can be enjoyed.
- FIG. 1 is a perspective view conceptually showing an embodiment according to a probe of the present invention.
- FIG. 2 is a sectional view and a bottom view conceptually showing an embodiment according to the probe of the present invention.
- FIG. 3 is a cross-sectional view showing an electrode included in an embodiment of the probe of the present invention in more detail.
- FIG. 4 is a cross-sectional view conceptually showing another configuration of the embodiment according to the probe of the present invention.
- FIG. 5 is a perspective view conceptually showing a modification of the embodiment according to the probe of the present invention.
- FIG. 6 is a cross-sectional view conceptually showing one step of a manufacturing method according to an embodiment of the probe of the present invention.
- FIG. 7 is a cross-sectional view conceptually showing another step of the method of manufacturing the probe according to the embodiment of the present invention.
- FIG. 8 is a cross-sectional view conceptually showing another step of the manufacturing method according to the embodiment of the probe of the present invention.
- FIG. 9 is a cross-sectional view conceptually showing another step of the manufacturing method according to the embodiment of the probe of the present invention.
- FIG. 10 is a cross-sectional view conceptually showing another step of the manufacturing method according to the embodiment of the probe of the present invention.
- FIG. 11 is a cross-sectional view conceptually showing another step of the manufacturing method according to the embodiment of the probe of the present invention.
- FIG. 12 is a cross-sectional view conceptually showing another step of the manufacturing method according to the embodiment of the probe of the present invention.
- FIG. 13 is a sectional view conceptually showing another step of the manufacturing method of the example according to the probe of the present invention.
- FIG. 14 is a sectional view conceptually showing another step of the manufacturing method of the example according to the probe of the present invention.
- FIGS. 15A and 15B are a cross-sectional view and a plan view conceptually showing another process of the manufacturing method according to the embodiment of the probe of the present invention.
- FIGS. 16A and 16B are a cross-sectional view and a plan view conceptually showing another process of the manufacturing method according to the embodiment of the probe of the present invention.
- FIG. 17 is a cross-sectional view conceptually showing another step of the manufacturing method according to the embodiment of the probe of the present invention.
- FIG. 18 is a cross sectional view conceptually showing another step of the manufacturing method of the example according to the probe of the present invention.
- FIG. 19 is a sectional view conceptually showing another step of the manufacturing method of the example according to the probe of the present invention.
- FIG. 20 is a block diagram conceptually showing a basic configuration of an embodiment according to a dielectric recording / reproducing apparatus employing the embodiment according to the probe of the present invention.
- FIG. 21 is a plan view and a sectional view conceptually showing a dielectric recording medium used for reproduction of the dielectric recording / reproducing apparatus according to the example.
- FIG. 22 is a sectional view conceptually showing a recording operation of the dielectric recording / reproducing apparatus according to the embodiment.
- FIG. 23 is a sectional view conceptually showing a reproducing operation of the dielectric recording / reproducing apparatus according to the embodiment.
- FIG. 1 is a perspective view conceptually showing the structure of the probe according to the present embodiment
- FIG. 2 is a cross-sectional view conceptually showing the structure of the probe according to the present embodiment
- FIG. 3 is a bottom view
- FIG. 3 is a cross-sectional view showing the electrode of the probe according to the present embodiment in more detail
- FIG. 4 is a cross-sectional view conceptually showing another configuration of the probe according to the present embodiment. is there.
- the probe 100 includes a substrate 110 and a plurality of electrodes 120 (one specific example of “point electrode” in the present invention).
- the substrate 110 includes, for example, a high-resistance member such as an insulating member such as silicon or glass, and has an inner surface formed in a conical shape having a flat top. On the inner surface side, a plurality of (four in FIG. 1) depressions having the shape of a quadrangular pyramid are formed. A through hole is formed in the surface on the side opposite to (the lower surface in FIG. 1). The electrode 120 is formed in the hollow and the through hole of the quadrangular pyramid.
- a high-resistance member such as an insulating member such as silicon or glass
- the material of the substrate 110 is not limited to silicon, glass, or the like, and any material having an insulating property, that is, a high-resistance material can be used as the substrate 110.
- the electrode 120 is configured to be able to apply an electric field to the dielectric recording medium 20 during a recording / reproducing operation of a dielectric recording / reproducing apparatus described later.
- the electrode 120 includes, for example, various metals such as chromium and platinum or an alloy thereof, and is formed in a through hole formed in the substrate 110.
- the electrode 120 as shown in FIG. 1 is formed by cracking or vapor-depositing metal or the like on the surfaces of the depressions and through holes of the quadrangular pyramid.
- the electrode 120 may be formed so as to fill (ie, close) the through hole with various metals, alloys, or the like.
- the electrode 120 has a minute circular shape on the surface of the substrate 110 facing the dielectric recording medium 20.
- the radius of this electrode is more preferably about 400 nm or less, more preferably about 100 nm or less, and more preferably about 50 nm (or less).
- the probe 100 according to the present embodiment is, as shown in the cross-sectional view of FIG. 2A, particularly a tip of the electrode 120 (that is, a portion of the electrode 120 that contacts the dielectric recording medium 20, A specific example of the “tip portion” in the present invention) and the surface of the substrate 110 facing the dielectric recording medium 20 are arranged on the same plane. That is, the tip force of the electrode 120 is not protruded or depressed from the surface of the substrate 110 facing the dielectric recording medium 20.
- the electrode 120 is formed such that the tip is aligned with the surface of the substrate 110 facing the dielectric recording medium 20.
- the probe 100 according to the present embodiment is observed from the side facing the dielectric recording medium 20
- a relatively large area It is possible to realize the probe 100 in which the electrodes 120 having a relatively small area are regularly (or discretely) distributed in the plane of the substrate 110 having. That is, it is possible to realize the probe 100 having a plurality of minute point electrodes.
- the probe 100 according to the present embodiment is physically in contact with the dielectric recording medium 20 with a relatively wide plane as a boundary surface (or as a result of the presence of the substrate 110). That can be achieved). That is, the physical contact area between the probe 100 and the dielectric recording medium 20 can be increased.
- the contact area can be increased to, for example, about 5 mm square.
- the contact area can be increased to about 500 ⁇ m square.
- the presence of the electrode 120 makes it possible to electrically contact the dielectric recording medium 20 at a minute contact point. That is, the electrical contact area between the probe 100 and the dielectric recording medium 20 can be reduced.
- the contact area can be reduced to a size corresponding to a circle having a diameter of, for example, 40 Onm, preferably 100 nm, more preferably about 50 nm. Therefore, for example, in a dielectric recording / reproducing apparatus to be described later, a region where the polarization direction of a dielectric material, which is a unit for recording information, can be appropriately changed can be made smaller.
- the wavelength of a laser beam (about 400 nm) that determines the information recording density in next-generation DVDs (eg, Blu-ray Discs, HD DVDs, etc.) using a blue laser beam currently under development. It is possible to record information at a high density in units smaller than). Therefore, high-density data recording and playback The operation can be realized.
- next-generation DVDs eg, Blu-ray Discs, HD DVDs, etc.
- the dielectric recording medium 20 can make contact with the dielectric recording medium 20 on a relatively wide flat surface, the unnecessary amount of the probe 100 from the dielectric recording medium 20 is wastefully increased.
- the floating can be eliminated, and the probe 100 and the dielectric recording medium 20 can be stably brought into contact with each other. That is, it is possible to suppress or prevent the inconvenience that the electrode 120 is too far away from the dielectric recording medium 20 due to unnecessary or wasteful lifting of the probe 100 and the recording operation and the reproducing operation cannot be performed properly. It becomes possible.
- the tip of the electrode 120 is arranged on the same plane as the surface of the substrate 110 on the side facing the dielectric recording medium 20, for example, in a probe having a protruding electrode, It is possible to suppress or prevent the inconvenience that dust such as fine dust adheres to the tip of the electrode as seen. As a result, it is possible to effectively suppress or prevent the disadvantage that signal characteristics are degraded during a recording operation or a reproducing operation.
- the electrode 120 is formed continuously in a through hole formed in the substrate 110. For this reason, even if a part of the substrate 110 is worn due to the contact between the substrate 110 and the dielectric recording medium 20 or the like, a small-diameter through hole in which the electrode 120 is formed remains. In addition, the electrode 120 having a minute circular shape can be brought into contact with the dielectric recording medium 20 continuously. That is, it is possible to maintain a state where the electrical contact area between the probe 100 and the dielectric recording medium 20 is relatively small.
- a silicon dioxide film is formed between the substrate 110 and the electrode 120, and between the substrate 110 and the electrode 120 (or between one electrode 120 and another electrode 120). Insulation between the electrode 120) is ensured. Therefore, even if a plurality of electrodes 120 are provided, it is possible to preferably perform a recording operation and a reproducing operation for each of the electrodes 120.
- the manner in which the silicon dioxide film is formed will be described in more detail later in the description of the method for manufacturing a probe according to the present embodiment.
- the insulating property is secured to some extent by the insulating or high-resistance substrate 110. Therefore, if the insulating property is ensured by the substrate 110, the silicon dioxide film is not necessarily provided! Further, by making the inner surface shape of the substrate 110 conical, it is possible to maintain the strength of the entire probe 100 while securing a desired thickness in a portion where the electrode 120 is formed. However, it goes without saying that from the viewpoint of extending the operating life of the probe 100, the inner surface shape of the substrate 100 does not necessarily have to be conical. Further, from the viewpoint of prolonging the operating life of the probe 100, there is no need to have a square pyramid-shaped depression formed on the inner surface of the substrate 110.
- the electrode 120 is not necessarily located in the through hole. It need not be formed continuously, but only needs to be formed at least to such an extent that it can come into contact with the dielectric recording medium 20 or the like. For example, even if there is no through hole extending from the top of the quadrangular pyramid-shaped depression, it is sufficient that the substantially circular electrode 120 having a diameter of about 50 nm to 400 nm can be realized at the top. Also, the electrode 120 need not necessarily be a through hole, for example, the upper portion may be covered with the substrate 110 or the like, and the electrode 120 may be formed in the hole.
- the electrode 120 may be a conductive member such as silicon or diamond doped with an impurity such as boron, for example, instead of the metal described above.
- a carbon nanotube (CNT), carbon nanohorn, amorphous carbon, or the like may be grown in a through hole formed in the substrate 110 to be used as the electrode 120.
- an electric field can be applied to the dielectric recording medium 20, it can be used as the electrode 120 included in the probe according to the present embodiment.
- the electrode 120 is formed on the side surface of the through-hole formed in the substrate 110 and the hollow of the quadrangular pyramid.
- the electrode 120 may be formed by filling the entire through hole with metal or the like.
- the tip of the electrode 120 slightly protrudes from the surface of the substrate 110 on the side facing the dielectric recording medium 20 (ie, is in a convex state). ). Even with such a configuration, the size of the tip of the electrode 120 is extremely small as compared with the size of the surface of the substrate 110 facing the dielectric recording medium 20. Therefore, the physical contact area between the probe 100 and the dielectric recording medium 20 is increased, and the electrical contact area is reduced. can do. However, from the viewpoint of effectively suppressing or preventing the progress of abrasion of the probe 100, it is preferable that the tip of the electrode 120 be flush with the surface of the substrate 110 facing the dielectric recording medium 20. .
- the tip of the electrode 120 is connected to the dielectric recording medium 20 of the substrate 110 as shown in FIG. It may be configured so as to be slightly dented from the surface on the opposite side (ie, in a concave state). Even with such a configuration, an electric field can be applied to the dielectric recording medium 20 from the electrode 120, so that the progress of the wear of the probe 100 without affecting the recording operation and the reproducing operation is further improved. It is possible to effectively suppress or prevent it.
- FIG. 5 is a perspective view when a modification of the structure of the probe according to the present embodiment is observed from the bottom side (the side facing the dielectric recording medium 20).
- the probe 101 according to the modification has a desired groove (or unevenness or the like) formed on the surface of the substrate 110 facing the dielectric recording medium.
- a groove or the like serving as a wind path when the probe 101 moves on the recording surface of the dielectric recording medium 20 may be formed.
- the probe 101 according to the modified example also has a portion on the surface of the substrate 110 facing the dielectric recording medium where the electrode 120 is formed (and a peripheral portion thereof), and the tip of the electrode 120 and the substrate 110 Are arranged on the same plane.
- the portion where the electrode 120 is formed and its peripheral portion correspond to a specific example of “around the region portion” in the present invention.
- the tip of the electrode 120 is formed at a predetermined point on the surface of the substrate 110 facing the dielectric recording medium 20 in the area where the electrode 120 is formed.
- the tip of the electrode 120 and the substrate 110 are coplanar. If they are arranged, it is possible to receive the same benefits as those of the probe 100 according to the present embodiment described above. However, the force of increasing the physical contact area between the probe 100 and the dielectric recording medium 20 depends on the wider area of the substrate 110 and the electrode. It is preferable that the tip of 120 is arranged on the same plane.
- FIGS. 6 to 19 are cross-sectional views conceptually showing each step of the method of manufacturing the probe according to the present embodiment.
- a silicon substrate 201 is prepared.
- the silicon substrate 201 becomes the substrate 110 provided mainly in the probe 100 through the steps described later.
- Such a silicon substrate 201 is referred to as a (100) substrate.
- a silicon dioxide (SiO 2) film is formed on the front and back surfaces of the silicon substrate 201.
- the silicon dioxide film 202 may be formed on the surface of the silicon substrate 201 by disposing the silicon substrate 201 in a high-temperature oxidizing atmosphere.
- a photoresist 203 is coated on the silicon dioxide film 202 by, for example, spin coating, and pattern jungling is performed. Specifically, after a photoresist 203 is coated on a silicon dioxide film 202 formed on one surface (for example, a front surface) of the silicon substrate 201, the photoresist 203 is patterned according to the inner surface shape of the substrate 110. Irradiate with ultraviolet light using a Jung photomask. Thereafter, the photoresist 203 is patterned by performing development. Of course, it is also possible to perform pattern jungling using, for example, EB (Electron Beam) resist or other materials.
- EB Electro Beam
- etching is performed on the silicon substrate 201 on which the photoresist 203 has been patterned.
- the portion of the silicon dioxide film 202 where the photoresist 203 is not applied is etched using, for example, BHF (buffered hydrofluoric acid).
- BHF buffered hydrofluoric acid
- the etching may be performed using another etchant, or may be performed by dry etching.
- the photoresist 203 is removed, The silicon substrate 201 and the silicon dioxide film 202 shown in FIG. 7 remain.
- the photoresist 203 may be removed by dry etching, or the photoresist 203 may be removed by wet etching! / ⁇ .
- anisotropic etching is performed on silicon substrate 201.
- anisotropic etching may be performed using an alkaline etchant such as TMAH (tetramethylammonium hydroxide) or KOH (potassium hydroxide).
- TMAH tetramethylammonium hydroxide
- KOH potassium hydroxide
- the silicon substrate 201 has a force that causes etching to proceed in the direction normal to the (100) plane (ie, the direction perpendicular to the silicon substrate 201 in FIG. 11). Etching is difficult to progress in the linear direction (that is, the direction in which the light enters the silicon substrate 201 at approximately 45 degrees in FIG. 11).
- anisotropic etching utilizing this property, as shown in FIG. 8, a conical substrate 110 having an inner surface having a flat top is formed.
- the recess on the inner surface side is preferably formed by etching the silicon substrate 201 by a thickness of about 250 ⁇ m. It is preferable that the thickness of the silicon substrate 201 in the recess is approximately 100 m or less.
- a silicon dioxide film 202 is formed on the front and back surfaces of the silicon substrate 201 again.
- a part of the silicon dioxide film 202 is etched to form a square pyramid-shaped depression.
- a patterning is performed such that the silicon dioxide film 202 is etched in a rectangular shape of, for example, 50 m square using a photoresist or the like as described above, and a silicon dioxide film is formed in accordance with the patterning. 202 is etched.
- anisotropic etching is performed on silicon substrate 201.
- anisotropic etching is performed using an alkaline etchant such as TMAH (hydroxymethyl tetramethylammonium) or KOH (hydroxyhydride potassium).
- TMAH hydroxymethyl tetramethylammonium
- KOH hydroxyhydride potassium
- the thickness force from the top of the depression of the quadrangular pyramid (that is, the lowermost part in FIG. 11) to the surface of the silicon substrate 201 on the side facing the dielectric recording medium 20 is approximately 1 ⁇ m or less. Can become preferable. At this time, the thickness of the silicon substrate 201 left by the etching in FIG. 8 or the size and shape of the silicon dioxide film 202 to be etched in FIG. Is preferred.
- the silicon substrate 201 is placed again in a high-temperature oxidizing atmosphere, whereby the silicon dioxide film 202 is formed.
- the silicon dioxide film 202 is formed, as shown in detail in FIG. 12 (b), the dioxin is formed at the edge of the surface of the square pyramid depression (for example, at the top of the square pyramid depression).
- the silicon dioxide film 202 is formed, on the other hand, the closer to the center of the surface, the more easily the silicon dioxide film 202 is formed. That is, the silicon dioxide film 202 is formed relatively thin at the end of the surface of the depression of the quadrangular pyramid, and becomes relatively thicker toward the center of the surface. 202 is formed.
- the formed silicon dioxide film is slightly etched.
- the silicon dioxide film 202 formed at the end of the depression of the pyramid that is, the silicon dioxide film 202 formed relatively thin
- a gap of the silicon dioxide film 202 is formed in a region of about 100 nm at the top of the hollow of the pyramid.
- the gap between the silicon dioxide layers 202 is about 100 nm!
- the silicon dioxide film 202 formed on the surface of the silicon substrate 201 on the side facing the dielectric recording medium 20 is removed.
- a through hole having a diameter of about 100 nm is formed in the silicon substrate 201.
- This through-hole is formed by, for example, irradiating an ion beam to a gap of about 100 nm of the silicon dioxide film 202 shown in FIG. It is formed.
- the silicon substrate 201 on which the through hole is formed (particularly, the side surface of the through hole) is oxidized to form a silicon dioxide film 202.
- the volume of the silicon increases because the silicon is converted into silicon dioxide. Therefore, as shown in more detail in FIG. 16 (b), the diameter of the through hole is reduced. Therefore, a hole having a diameter of, for example, about 50 nm is formed by forming the silicon dioxide film 202.
- At least a part of the electrode 120 is formed. Specifically, at least a part of the electrode 120 is formed by depositing a metal or the like on at least the surface of the depression of the quadrangular pyramid.
- the electrode 120 is formed using, for example, an evaporation method, a sputtering method, a Cupper-CVD method, or the like.
- a base such as titanium is deposited before depositing a metal or the like which is a material of the electrode 120, and then a metal or the like is deposited. 120 may be configured.
- the side surface or the entire inside of the through hole is plated with metal. That is, by using the electrode 120 formed in the process of FIG. 17 as a seed and growing metal inside the through hole, as shown in FIG. 18, the electrode 120 in which the entire inside of the through hole is filled with metal is obtained. It is formed.
- the surface of the silicon substrate 201 or the like facing the dielectric recording medium 20 is polished or the like to make it smooth.
- the surface is polished or the like so that the surface is substantially flat, and more preferably a plane that is substantially parallel to the recording surface of the dielectric recording medium 20.
- FIG. 20 is a block diagram conceptually showing the basic configuration of the dielectric recording / reproducing apparatus according to the present embodiment.
- the dielectric recording / reproducing apparatus 1 includes a probe 100 in which the electrode 120 applies an electric field to the dielectric material 17 of the dielectric recording medium 20, a signal applied to the probe 100 (particularly, the electrode 120).
- An oscillator 13 that oscillates at a resonance frequency determined by Cs, an AC signal generator 21 for applying an alternating electric field for detecting the polarization state recorded on the dielectric material 17, and a polarization state on the dielectric material.
- a demodulator 30 that demodulates the FM signal modulated by the capacity corresponding to the state, a signal detector 34 that detects data from the demodulated signal, and a tracking error that detects a tracking error signal from the demodulated signal. Detector 35 etc. It comprises.
- the electrode 120 of the probe 100 is connected to the oscillator 13 via the HPF 24, and is connected to the AC signal generator 21 and the recording signal generator 22 via the HPF 24 and the switch 23. Then, it functions as an electrode for applying an electric field to the dielectric material 17.
- the probe 100 is illustrated as having a single electrode 120 for the sake of simplicity of description, it may be a probe 100 having a plurality of electrodes 120, as a matter of course.
- a plurality of signal detection units 34 are provided so that the reproduced signals corresponding to the respective AC signal generators 21 can be discriminated in the signal detection unit 34, and each of the signal detection units 34 is provided with a corresponding one of the AC signal generators 21. It is preferable to obtain a reference signal and output a corresponding reproduction signal.
- the return electrode 12 is an electrode to which the high-frequency electric field (that is, the resonance electric field from the transmitter 13) applied to the probe 100 (particularly the electrode 120) and the dielectric material 17 returns, and surrounds the probe 100. It is provided in. If the high-frequency electric field returns to the return electrode 12 without resistance, its shape and arrangement can be arbitrarily set. Further, the return electrode 12 may be formed on the silicon substrate 110 provided in the probe 10.
- the inductor L is provided between the probe 100 and the return electrode 12, and is formed of, for example, a microstrip line.
- Resonant circuit 14 includes inductor L and capacitance Cs. Made.
- the inductance of the inductor L is determined so that the resonance frequency has a value centered on, for example, about 1 GHz.
- the oscillator 13 is an oscillator that oscillates at a resonance frequency determined by the inductor L and the capacitance Cs.
- the oscillation frequency changes in accordance with the change in the capacitance Cs. Therefore, the FM modulation is performed in accordance with the change in the capacitance Cs determined by the polarization region corresponding to the recorded data. By demodulating this FM modulation, data recorded on the dielectric recording medium 20 can be read.
- the resonance circuit 14 is composed of the probe 100, the return electrode 12, the oscillator 13, the inductor L, the HPF 24, and the capacitance Cs in the dielectric material 17.
- the demodulated FM signal is output to demodulator 30.
- AC signal generator 21 applies an alternating electric field between return electrode 12 and electrode 16.
- the frequency is synchronized as a reference signal, and a signal detected by the probe 100 is discriminated.
- the frequency is centered at about 5 kHz, and an alternating electric field is applied to a minute area of the dielectric material 17.
- the recording signal generator 22 generates a signal for recording, and is supplied to the probe 100 during recording.
- This signal is not limited to a digital signal and may be an analog signal.
- These signals include various signals such as audio information, video information, and digital data for a computer.
- the AC signal superimposed on the recording signal is used for discriminating and reproducing information of each probe as a reference signal at the time of signal reproduction.
- the switch 23 selects the output so that the signal from the AC signal generator 21 is supplied to the probe 100 during reproduction, and the signal from the recording signal generator 22 is supplied to the probe 100 during recording.
- This device preferably uses a mechanical relay or a semiconductor circuit.
- the analog signal is preferably a relay force.
- the digital signal is preferably composed of a semiconductor circuit.
- L is the inductance of the inductor included in HPF24
- C is the capacitance of the capacitor included in HPF24. Since the frequency of the AC signal is about 5 kHz and the oscillation frequency of the oscillator 13 is about 1 GHz, the separation is sufficiently performed by the primary LC filter. Higher degree! ⁇ You can use a filter! Since ⁇ has a large number of elements, the device may be large.
- the demodulator 30 demodulates the oscillation frequency of the oscillator 13 that has been FM-modulated due to the minute change in the capacitance Cs, and restores a waveform corresponding to the polarized state of the portion traced by the probe 100. . If the recorded data is digital “0” and “1” data, there are two types of frequencies to be modulated, and the data can be easily reproduced by judging the frequency.
- the signal detection unit 34 reproduces recorded data from the signal demodulated by the demodulator 30.
- a lock-in amplifier is used as the signal detector 34, and data is reproduced by performing synchronous detection based on the frequency of the alternating electric field of the AC signal generator 21. It should be noted that other phase detection means may be used.
- the tracking error detector 35 detects a tracking error signal for controlling the device from the signal demodulated by the demodulator 30.
- the detected tracking error signal is input to the tracking mechanism to perform control.
- FIG. 21 is a plan view and a sectional view conceptually showing an example of the dielectric recording medium 20 used in this embodiment.
- the dielectric recording medium 20 is a disk-shaped dielectric recording medium and includes, for example, a center hole 10 and an inner circumferential area 7 concentric with the center hole 10 from the inside. , A recording area 8 and an outer peripheral area 9.
- the center hole 10 is used, for example, when mounted on a spindle motor.
- the recording area 8 is an area for recording data and has tracks and spaces between tracks, and the tracks and spaces are provided with areas for recording control information related to recording and reproduction.
- the inner peripheral area 7 and the outer peripheral area 8 are used for recognizing the inner peripheral position and the outer peripheral position of the dielectric recording medium 20, and information on data to be recorded, for example, title, its address, recording time, recording capacity, etc. Also used as an area for recording It is possible.
- the above-described configuration is merely an example, and other configurations such as a card form can be adopted.
- the dielectric recording medium 20 is formed by laminating an electrode 16 on a substrate 15 and a dielectric material 17 on the electrode 16.
- the substrate 15 is, for example, Si (silicon), and is a material suitable for its rigidity, chemical stability, workability, and the like.
- the electrode 16 is for generating an electric field with the probe 100 (or the return electrode 12), and determines the polarization direction by applying an electric field higher than the coercive electric field to the dielectric material 17. Recording is performed by determining the polarization direction corresponding to the data
- the dielectric material 17 is formed, for example, by sputtering a ferroelectric material such as LiTaO on the electrode 16.
- the dielectric material 17 forms minute polarization at high speed by a DC data voltage and a data voltage which is high at the same time.
- the shape of the dielectric recording medium 20 includes, for example, a disk form and a card form.
- Movement of the position relative to the probe 10 is performed by rotation of the medium, or when one of the probe 100 and the medium moves linearly (for example, on two axes, the X axis and the Y axis). Done.
- FIG. 22 is a cross-sectional view conceptually showing the information recording operation.
- the direction of the applied electric field is increased.
- the dielectric material is polarized with a corresponding direction.
- predetermined information can be recorded. This utilizes the property that when an electric field exceeding the coercive electric field is applied to a dielectric (particularly a ferroelectric), the polarization direction is reversed and the polarization direction is maintained in a state.
- the minute region has a downward polarization P
- the polarization P has an upward polarization.
- the detection voltage is output as a rectangular wave that swings up and down in accordance with the polarization P. Note that this level varies depending on the degree of polarization of the polarization P, and recording as an analog signal is also possible.
- the probe 100 and the like according to the above-described embodiment are used as probes, the physical contact area between the probe 100 and the dielectric recording medium 20 is increased and the electrical contact area is increased. Can be reduced. Therefore, as described above, the recording operation can be suitably performed using the probe 100 having a long operating life without advancing the wear of the probe 100.
- FIG. 23 is a cross-sectional view conceptually showing the operation of reproducing information.
- the non-linear dielectric constant of a dielectric changes according to the polarization direction of the dielectric.
- the non-linear dielectric constant of the dielectric can be detected as a difference in capacitance or a change in capacitance of the dielectric when an electric field is applied to the dielectric. Therefore, by applying an electric field to the dielectric material and detecting a difference in the capacitance Cs in a certain small area of the dielectric material at that time! Data recorded as the direction of polarization can be read and reproduced.
- an alternating electric field from an AC signal generator 21 (not shown) is applied between the electrode 16 and the probe 100 (that is, the electrode 120 included in the probe 100).
- This alternating electric field has an electric field intensity not exceeding the coercive electric field of the dielectric material 17, and has a frequency of, for example, about 5 kHz.
- the alternating electric field is generated mainly to enable discrimination of the difference in capacitance change corresponding to the polarization direction of the dielectric material 17.
- police box instead of an electric field, a DC bias voltage may be applied to form an electric field in the dielectric material 17. When such an alternating electric field is applied, an electric field is generated in the dielectric material 17 of the dielectric recording medium 20.
- the probe 100 is made to approach the recording surface until the distance between the tip of the electrode 120 and the recording surface becomes a very small distance on the order of nanometers. In this state, the oscillator 13 is driven.
- the probe 11 be in contact with the surface of the dielectric material 17, that is, the recording surface.
- the reproducing operation furthermore, Operation
- the oscillator 13 oscillates at a resonance frequency of a resonance circuit including the capacitance Cs of the dielectric material 17 immediately below the electrode 120 and the inductor L as constituent factors.
- This resonance frequency has a center frequency of about 1 GHz as described above.
- the return electrode 12 and the probe 100 constitute a part of the oscillation circuit 14 including the oscillator 13.
- a high-frequency signal of about 1 GHz applied from the probe 11 to the dielectric material 17 passes through the dielectric material 17 and returns to the return electrode 12 as indicated by a dotted arrow in FIG.
- the return electrode 12 is provided near the probe 100 (that is, the electrode 120), and the feedback path of the oscillation circuit including the oscillator 13 is shortened, so that noise (for example, stray capacitance component) enters the oscillation circuit. can do.
- a change in the capacitance Cs corresponding to the nonlinear dielectric constant of the dielectric material 17 is very small, and in order to detect the change, it is necessary to employ a detection method having high detection accuracy.
- the detection method using FM modulation it is generally necessary to further increase the detection accuracy in order to enable detection of a small capacitance change corresponding to the nonlinear dielectric constant of the dielectric material 17 that can obtain a high detection accuracy. is there. Therefore, in the dielectric recording / reproducing apparatus 1 (that is, the recording / reproducing apparatus using the SNDM principle) according to the present embodiment, the return electrode 12 is arranged near the probe 100, and the return path of the oscillation circuit is made as short as possible. I have.
- the probe 100 After driving the oscillator 13, the probe 100 is moved on the dielectric recording medium 20 in a direction parallel to the recording surface. Then, the movement changes the domain of the dielectric material 17 immediately below the probe 100, and the capacitance Cs changes each time the polarization direction changes. When the capacitance Cs changes, the resonance frequency, that is, the oscillation frequency of the oscillator 13 changes. As a result, the oscillator 13 outputs an FM-modulated signal based on the change in the capacitance Cs.
- the FM signal is frequency-voltage converted by the demodulator 30.
- the change in the capacitance Cs is converted to the magnitude of the voltage.
- the change in capacitance Cs corresponds to the non-linear dielectric constant of the dielectric material 17, which corresponds to the polarization direction of the dielectric material 17, and the polarization direction is determined by the data recorded on the dielectric material 17.
- the signal obtained from the demodulator 30 is a signal whose voltage changes in accordance with the data recorded on the dielectric recording medium 20.
- the signal obtained from the demodulator 30 is supplied to a signal detection unit 34, and the data recorded on the dielectric recording medium 20 is extracted by, for example, synchronous detection.
- the AC signal generated by the AC signal generator 21 is used as a reference signal.
- the data is extracted with high accuracy by synchronizing with the reference signal as described later. It is possible to do.
- the probe 100 and the like according to the above-described embodiment are used as probes, the physical contact area between the probe 100 and the dielectric recording medium 20 is increased and the electrical contact area is increased. Can be reduced. Therefore, as described above, the reproducing operation can be suitably performed using the probe 100 having a long operating life without advancing the wear of the probe 100.
- the z-axis direction (for example, the direction perpendicular to the recording surface of the dielectric recording medium 20). Direction) to drive the dielectric recording medium 20 or the probe 100.
- the circular dielectric recording medium 20 may be rotated by a spindle motor or the like.
- the relative linear velocity of the dielectric recording medium 20 with respect to the probe 100 as in the CLV (Constant Liner Velocity) recording method of an optical disk can be constant. Therefore, an air flow can be generated between the gap between the dielectric recording medium 20 and the probe 100, so that the probe 100 floats by a very small amount with respect to the recording surface of the dielectric recording medium 20.
- the probe can be configured as a type recording / reproducing head (flying head).
- the wear of the probe 100 does not progress, but, for example, undulation (or tilt) of the dielectric recording medium 20 or an effect on the probe 100 Depending on the applied force, the dielectric recording medium 20 may come into contact with the probe 100 sufficiently. Even when such unintended contact occurs, the probe 100 according to the present embodiment has a great advantage that the progress of wear of the probe 100 can be suppressed or prevented as described above. ing.
- the dielectric material 17 is used for the recording layer.
- the dielectric material 17 is a ferroelectric. It is preferable.
- the probe 100 and the like according to the present embodiment described above are similar to the SND described in the present embodiment. Not only for the recording / reproducing apparatus related to M, but also for a scanning capacitive microscope such as SCaM or for a recording / reproducing apparatus and an apparatus for creating various devices such as an SHG (Sub Harmonic Generation) device. Is also good.
- the present invention can be appropriately modified within a scope that does not contradict the gist or idea of the present invention, which can also read the claims and the overall power of the specification.
- a probe with such a change, a recording device, and a reproduction device The device and the recording / reproducing device are also included in the technical concept of the present invention.
- a probe according to the present invention, and a recording apparatus, a reproducing apparatus, and a recording / reproducing apparatus are, for example, a probe for recording and reproducing polarization information recorded on a dielectric such as a ferroelectric recording medium, and a ferroelectric recording medium
- the present invention can be used for a recording device, a reproducing device, and a recording / reproducing device for recording and reproducing polarization information recorded on a dielectric material such as.
Landscapes
- Semiconductor Memories (AREA)
- Measuring Leads Or Probes (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/629,203 US7672214B2 (en) | 2004-06-16 | 2005-06-14 | Probe, recording apparatus, reproducing apparatus, and recording/reproducing apparatus |
EP05750820A EP1760710A4 (en) | 2004-06-16 | 2005-06-14 | PROBE, RECORDING DEVICE, REPRODUCING DEVICE, AND RECORDING / REPRODUCING DEVICE |
Applications Claiming Priority (2)
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JP2004-178612 | 2004-06-16 | ||
JP2004178612A JP4360544B2 (ja) | 2004-06-16 | 2004-06-16 | プローブ、並びに記録装置、再生装置及び記録再生装置 |
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WO2005124758A1 true WO2005124758A1 (ja) | 2005-12-29 |
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PCT/JP2005/010884 WO2005124758A1 (ja) | 2004-06-16 | 2005-06-14 | プローブ、並びに記録装置、再生装置及び記録再生装置 |
Country Status (5)
Country | Link |
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US (1) | US7672214B2 (ja) |
EP (1) | EP1760710A4 (ja) |
JP (1) | JP4360544B2 (ja) |
CN (1) | CN1981337A (ja) |
WO (1) | WO2005124758A1 (ja) |
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JP4405451B2 (ja) * | 2005-09-05 | 2010-01-27 | 株式会社東芝 | 情報記録装置 |
US8004958B2 (en) * | 2006-04-18 | 2011-08-23 | Pioneer Corporation | Information recording/reproducing apparatus |
KR101260903B1 (ko) * | 2007-12-24 | 2013-05-06 | 시게이트 테크놀로지 엘엘씨 | 전계기록재생헤드, 이를 채용한 전계기록재생장치 및전계기록재생헤드의 제조방법 |
US20090201015A1 (en) * | 2008-02-12 | 2009-08-13 | Nanochip, Inc. | Method and device for detecting ferroelectric polarization |
JP2009222528A (ja) * | 2008-03-14 | 2009-10-01 | National Univ Corp Shizuoka Univ | プローブ針、カンチレバー及びそれらの製造方法 |
US9474574B2 (en) | 2008-05-21 | 2016-10-25 | Atricure, Inc. | Stabilized ablation systems and methods |
WO2010086759A1 (en) * | 2009-01-30 | 2010-08-05 | International Business Machines Corporation | High-speed scanning probe microscope |
EP2637591B1 (en) * | 2010-11-12 | 2019-07-17 | Estech, Inc (Endoscopic Technologies, Inc) | Stabilized ablation systems |
US10732201B2 (en) * | 2014-04-13 | 2020-08-04 | Infineon Technologies Ag | Test probe and method of manufacturing a test probe |
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JPS55150144A (en) * | 1979-05-09 | 1980-11-21 | Victor Co Of Japan Ltd | Reproducing stylus of variation detection type reproducing element for electrostatic capacity value |
JPH08189931A (ja) * | 1995-01-10 | 1996-07-23 | Nikon Corp | カンチレバー及びその製造方法、並びに同カンチレバーを用いた走査型プローブ顕微鏡 |
JP2004028853A (ja) * | 2002-06-27 | 2004-01-29 | Ricoh Co Ltd | 近接場光プローブ |
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JPH01290598A (ja) * | 1988-05-17 | 1989-11-22 | Res Dev Corp Of Japan | 微細マルチプローブの製造方法 |
JPH07121916A (ja) | 1993-10-26 | 1995-05-12 | Canon Inc | 探針機構、該探針機構の駆動方法および前記探針機構を備えたメモリー装置 |
JP3978818B2 (ja) * | 1997-08-08 | 2007-09-19 | ソニー株式会社 | 微小ヘッド素子の製造方法 |
WO2000019494A1 (en) | 1998-09-28 | 2000-04-06 | Xidex Corporation | Method for manufacturing carbon nanotubes as functional elements of mems devices |
US7599277B1 (en) | 1998-11-09 | 2009-10-06 | Seiko Instruments Inc. | Near-field optical head having tapered hole for guiding light beam |
JP3945561B2 (ja) * | 2000-06-30 | 2007-07-18 | 日本電子株式会社 | 引出電極の作製方法 |
JP4771324B2 (ja) | 2001-09-10 | 2011-09-14 | パイオニア株式会社 | 誘電体情報装置、テープ状媒体記録再生装置及びディスク状媒体記録再生装置 |
JP4082947B2 (ja) * | 2002-07-09 | 2008-04-30 | パイオニア株式会社 | 記録再生ヘッド及びその製造方法 |
JP4141811B2 (ja) | 2002-11-18 | 2008-08-27 | パイオニア株式会社 | 情報記録読取ヘッド |
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2004
- 2004-06-16 JP JP2004178612A patent/JP4360544B2/ja not_active Expired - Fee Related
-
2005
- 2005-06-14 WO PCT/JP2005/010884 patent/WO2005124758A1/ja active Application Filing
- 2005-06-14 EP EP05750820A patent/EP1760710A4/en not_active Withdrawn
- 2005-06-14 CN CNA2005800196266A patent/CN1981337A/zh active Pending
- 2005-06-14 US US11/629,203 patent/US7672214B2/en not_active Expired - Fee Related
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JPS55150144A (en) * | 1979-05-09 | 1980-11-21 | Victor Co Of Japan Ltd | Reproducing stylus of variation detection type reproducing element for electrostatic capacity value |
JPH08189931A (ja) * | 1995-01-10 | 1996-07-23 | Nikon Corp | カンチレバー及びその製造方法、並びに同カンチレバーを用いた走査型プローブ顕微鏡 |
JP2004028853A (ja) * | 2002-06-27 | 2004-01-29 | Ricoh Co Ltd | 近接場光プローブ |
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Also Published As
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JP2006004501A (ja) | 2006-01-05 |
US20080043598A1 (en) | 2008-02-21 |
CN1981337A (zh) | 2007-06-13 |
US7672214B2 (en) | 2010-03-02 |
EP1760710A1 (en) | 2007-03-07 |
JP4360544B2 (ja) | 2009-11-11 |
EP1760710A4 (en) | 2008-05-07 |
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