CN108414955A - A kind of survey magnetic specimen holder, magnetic measurement system and survey magnetism method - Google Patents
A kind of survey magnetic specimen holder, magnetic measurement system and survey magnetism method Download PDFInfo
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- CN108414955A CN108414955A CN201810213397.0A CN201810213397A CN108414955A CN 108414955 A CN108414955 A CN 108414955A CN 201810213397 A CN201810213397 A CN 201810213397A CN 108414955 A CN108414955 A CN 108414955A
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
- G01R33/1253—Measuring galvano-magnetic properties
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The application discloses a kind of survey magnetic specimen holder, magnetic measurement system and survey magnetism method, the survey magnetic specimen holder includes substrate, a plurality of metal electrode lines and multiple metal ferrules, wherein a plurality of metal electrode lines are formed on substrate, the a plurality of metal electrode lines are electrically connected with the multiple metal ferrule, when needing to carry out Magnetic Measurement to magnetic sample to be measured, magnetic sample to be measured is installed to and is surveyed on magnetic specimen holder, the magnetic sample to be measured is connected to metal ferrule by multiple metal electrode lines, external power supply is connected to by metal ferrule again, form closed circuit, when in closed circuit by electric current or application voltage, the magnetism of magnetic sample to be measured is tested, to obtain the macroscopic magnetization of magnetic sample to be measured.That is, the survey magnetic specimen holder provided through the invention, directly can be powered up survey magnetic to magnetic sample to be measured, realizes by applying electric field or electric current in situ to magnetic sample to be measured, characterize the purpose of the macroscopic magnetization of sample.
Description
Technical field
The present invention relates to material properties test technical field more particularly to a kind of survey magnetic specimen holder, magnetic measurement system and survey magnetic
Method.
Background technology
Multi-iron material is functional material that is a kind of while having at least two properties in magnetic, ferroelectricity or ferroelasticity,
In magnetoelectricity multi-iron material based on magneto-electric coupled it is especially noticeable.Magnetoelectricity multi-iron material is because external magnetic field control can be used
The ferromagnetism of ferroelectricity or external electric field the control material of prepared material, in storage, logical operation and spintronics devices etc.
Show very important potential application.
To the characterization aspect of magnetoelectricity multi-iron material, some means of testing have now been developed, in general, by the body block of test
Material or film sample are mounted on the sample stage of specimen holder test lead, make the pedestal of the electrode and test system of sample surfaces
Ohm connection, then specimen holder is sent into test system, after vacuumizing, it is defeated that various electricity are carried out at different temperature and magnetic field condition
The test of fortune.
In the prior art at present survey magnetic mode be by change external magnetic field come measure magnetoelectricity multi-iron material sample dielectric,
Ferroelectric properties, such method may be collectively referred to as positive magnetoelectric effect.That is, by external magnetic field variation come the magnetism of sample.Currently,
There are no by applying direct current or the electric field or electric current of exchange to sample, carry out the magnetic device of direct test sample.
Although in micro-scale, there are some means, for example locally apply biased electrical to sample using piezoelectricity force probe
, then go the magnetic domain of detection corresponding topical to change with magnetic probe.But at present on a macroscopic scale, there are no by right
Sample applies electric field or electric current in situ, characterizes the test device of the macroscopic magnetization of sample.
Invention content
In view of this, a kind of survey magnetic specimen holder of present invention offer, magnetic measurement system and survey magnetism method, to supplement in the prior art
Apply electric field or electric current in situ not over to sample, characterizes the blank of the test device of the macroscopic magnetization of sample.
To achieve the above object, the present invention provides the following technical solutions：
A kind of survey magnetic specimen holder, including：
Substrate, the substrate include being oppositely arranged first end and second end；
A plurality of metal electrode lines on the substrate, the length direction of a plurality of metal electrode lines is along the substrate
First end be directed toward the direction of second end, mutually insulated between a plurality of metal electrode lines；
Positioned at multiple metal ferrules of the first end of the substrate, one end of the metal ferrule and the metal electrode lines
It corresponds and is electrically connected；
Wherein, the substrate, the metal electrode lines and the metal ferrule are non magnetic material, and the substrate is used for
Magnetic sample to be measured is carried, a surface of a connection magnetic sample to be measured in a plurality of metal electrode lines, remaining institute
The other end for stating metal electrode lines is connected with another surface of the magnetic sample to be measured, and the other end of the metal ferrule is connected to
External power supply, the external power supply, the metal ferrule, the metal electrode lines and the magnetic sample formation to be measured are closed back
Road.
Preferably, the first end of the substrate is fast insert-pull interface, and the fast insert-pull interface includes ambroin end
Mouthful, the metal ferrule is protected around multiple metal ferrules in the ambroin port.
Preferably, the material of the substrate is plastics.
Preferably, the material of the substrate is aluminium oxide ceramics.
Preferably, the material of the substrate is aluminium nitride ceramics.
The present invention also provides a kind of magnetic measurement systems, including：Power supply, control device, coil, motor and survey magnetic specimen holder；
Wherein, the magnetic specimen holder of surveying is the survey magnetic specimen holder described in any of the above one；
The metal ferrule for surveying magnetic specimen holder is electrical connected with the power supply, and the survey magnetic specimen holder is mounted on the horse
Up to lower section；
The second end for surveying magnetic specimen holder passes through the coil, the coil and magnetic sample to be measured on the survey magnetic specimen holder
The position of product is correspondingly arranged；
The coil is connected with the control device；
The control device is connected with the power supply, the motor；
The control device controls the power supply and powers for the survey magnetic specimen holder, is powered up to the survey magnetic specimen holder, and
It controls the motor and drives the surveys magnetic specimen holder vibration so that the coil is converted to magnetic signal described in electric signal feeds back to
Control device obtains the magnetic parameter of sample on the survey magnetic specimen holder.
Preferably, it is additionally provided with variable connector between the survey magnetic specimen holder and the power supply, for the survey magnetic sample
The conductive electrode of magnetic sample to be measured on product bar is selected.
Preferably, it is additionally provided with magnet around the magnetic sample position to be measured for surveying magnetic specimen holder, the magnet is for changing
Become the magnetism of magnetic sample to be measured on the survey magnetic specimen holder.
The present invention also provides a kind of survey magnetism method, using in magnetic measurement system described above, the survey magnetism method includes：
Magnetic sample to be measured is placed on the substrate of specimen holder；
The magnetic sample to be measured and the metal electrode lines are electrically connected；
The survey magnetic specimen holder is installed to the corresponding position of the magnetic measurement system；
To the magnetic sample to be measured power-up on the survey magnetic specimen holder, and control motor starting；
Magnetic Measurement is carried out to the magnetic sample to be measured, obtains magnetic parameter.It can be seen via above technical scheme that this hair
The survey magnetic specimen holder of bright offer, including substrate, a plurality of metal electrode lines and multiple metal ferrules, wherein a plurality of metal electrode is linear
At on substrate, a plurality of metal electrode lines are electrically connected with the multiple metal ferrule, when need to magnetic sample to be measured into
When row Magnetic Measurement, magnetic sample to be measured is installed to and is surveyed on magnetic specimen holder, the magnetic sample to be measured passes through multiple metal electrode lines
It is connected to metal ferrule, then external power supply is connected to by metal ferrule, form closed circuit, when passing through electric current in closed circuit
Or when applying voltage, the magnetism of magnetic sample to be measured is tested, to obtain the macroscopic magnetization of magnetic sample to be measured.That is, logical
Survey magnetic specimen holder provided by the invention is crossed, can survey magnetic directly be powered up to magnetic sample to be measured, realized by magnetic to be measured
Sample applies electric field or electric current in situ, characterizes the purpose of the macroscopic magnetization of sample.
In addition, the present invention also provides a kind of magnetic measurement system, the magnetic measurement system includes power supply, control device, coil, motor
With the survey magnetic specimen holder, realizes and electric field or electric current are applied in situ to magnetic sample to be measured, characterize the purpose of the macroscopic magnetization of sample.
The present invention also provides a kind of survey magnetism methods, using this method, realize to magnetic sample to be measured in situ apply electric field or
Electric current characterizes the purpose of the macroscopic magnetization of sample.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of structural schematic diagram for surveying magnetic specimen holder provided in an embodiment of the present invention；
Fig. 2 is the sample installation site and wiring schematic diagram provided in an embodiment of the present invention for surveying magnetic specimen holder；
Fig. 3 is that the electric field for surveying magnetic specimen holder or electric current provided in an embodiment of the present invention introduce interface diagram；
Fig. 4 is provided in an embodiment of the present invention about the hysteresis loop M-H back end signals surveyed under magnetic specimen holder no-load condition；
Fig. 5 is that the magnetic moment provided in an embodiment of the present invention about ferromagnetic/ferro-electricity compound film sample is bent with the M-E of external electric field
Line；
Fig. 6 is a kind of magnetic measurement system structural schematic diagram provided in an embodiment of the present invention；
Fig. 7 is the schematic diagram of multi-electrode provided in an embodiment of the present invention switch；
Fig. 8 is the multi-electrode switching signal change curve of ferromagnetic/ferro-electricity compound film sample provided in an embodiment of the present invention；
Fig. 9 is another magnetic measurement system structural schematic diagram provided in an embodiment of the present invention；
Figure 10 is a kind of survey magnetism method flow diagram provided in an embodiment of the present invention.
Specific implementation mode
Since the macroscopic magnetization of magnetoelectricity multi-iron material is changed by the change of external magnetic field, in the prior art usually
The macroscopic magnetization of magnetoelectricity multi-iron material is tested by changing external magnetic field, is based on this, general survey magnetic machine is equal in the prior art
Equipment to change external magnetic field.In recent years, the development of magnetoelectricity multi-iron material is swift and violent, also comes into being simultaneously to the testing requirement of automatically controlled magnetic
Constantly improve, but survey magnetic machine there are no power-up in the prior art, and when due to measuring magnetic, need to shake with certain frequency
The more iron samples of dynamic magnetoelectricity, when installing powered device, the problems such as there are interface stability and interference.
Based on this, a kind of survey magnetic specimen holder provided by the invention, including：
Substrate, the substrate include being oppositely arranged first end and second end；
A plurality of metal electrode lines on the substrate, the length direction of a plurality of metal electrode lines is along the substrate
First end be directed toward the direction of second end, mutually insulated between a plurality of metal electrode lines；
Positioned at multiple metal ferrules of the first end of the substrate, one end of the metal ferrule and the metal electrode lines
It corresponds and is electrically connected；
Wherein, the substrate, the metal electrode lines and the metal ferrule are non magnetic material, and the substrate is used for
Magnetic sample to be measured is carried, a surface of a connection magnetic sample to be measured in a plurality of metal electrode lines, remaining institute
The other end for stating metal electrode lines is connected with another surface of the magnetic sample to be measured, and the other end of the metal ferrule is connected to
External power supply, the external power supply, the metal ferrule, the metal electrode lines and the magnetic sample formation to be measured are closed back
Road.
Survey magnetic specimen holder provided by the invention, including substrate, a plurality of metal electrode lines and multiple metal ferrules, wherein a plurality of
Metal electrode lines are formed on substrate, and a plurality of metal electrode lines are electrically connected with the multiple metal ferrule, when needs pair
When magnetic sample to be measured carries out Magnetic Measurement, magnetic sample to be measured is installed to and is surveyed on magnetic specimen holder, the magnetic sample to be measured passes through more
A metal electrode lines are connected to metal ferrule, then are connected to external power supply by metal ferrule, form closed circuit, when being closed back
In road by electric current or when applying voltage, the magnetism of magnetic sample to be measured is tested, to obtain the macroscopic view of magnetic sample to be measured
It is magnetic.That is, the survey magnetic specimen holder provided through the invention, directly can be powered up survey magnetic to magnetic sample to be measured, realize
By applying electric field or electric current in situ to magnetic sample to be measured, the purpose of the macroscopic magnetization of sample is characterized.And interface is stablized, material
Non-magnetic component is selected, diamagnetism can be interfered well.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 is referred to, Fig. 1 is a kind of structural schematic diagram for surveying magnetic specimen holder provided in an embodiment of the present invention；Survey magnetic sample
Bar includes：Substrate 1, metal electrode lines 2 and metal ferrule 8, wherein a plurality of metal electrode lines 2 are located on substrate 1, and substrate 1 includes
The first end and second end being oppositely arranged, it is optional in the present embodiment, as shown in Figure 1, substrate 1 is strip structure, a plurality of gold
The length direction for belonging to electrode wires 2 is arranged along the length direction of substrate 1, namely the direction of second end is directed toward along the first end of substrate 1.
Mutually insulated between a plurality of metal electrode lines；Metal ferrule 8 is located in the first end of substrate in the present embodiment, multiple metal ferrules
It connects one to one between 8 and a plurality of metal electrode lines 2, that is, a metal ferrule 8 connects the one of a metal electrode lines 2
End, when metal ferrule 8 is connected to external circuit, the metal electrode lines 2 being correspondingly connected with are also connected in external circuit.
In the embodiment of the present invention, substrate 1 is used for bearing metal electrode wires 2, while for carrying magnetic sample to be measured, when to be measured
When magnetic sample is carried on substrate 1, as shown in Fig. 2, by conductor wire 7 by one end of metal electrode lines 2 and magnetic sample 5 to be measured
One end of conductive electrode 6 on (namely magnetoelectricity sample) is electrically connected.The specific material of the conductor wire 7 is not limited in the present embodiment
Matter, optionally, conductor wire 7 can be spun gold line.
The concrete structure of magnetoelectricity sample 5 is not limited in the embodiment of the present invention, optionally, the magnetoelectricity sample can be film
Sample or other samples with magneto-electric coupled characteristic are carried out so that the magnetoelectricity sample is film sample as an example in the present embodiment
Illustrate, in a magnetic measurement system, the film sample that the magnetoelectricity sample is 5 millimeters × 5 millimeters, elargol is equably smeared in bottom
Conductive electrode 6, there are four magnetic pole, the spun gold lines for being 0.02 millimeter by line footpath, by conductive electrode 6 and metal electricity on surface
One end of polar curve 2 connects.The number for surveying the metal electrode lines 2 on magnetic specimen holder is more than the item number of conductive electrode 6, so that golden
Wherein one belonged in electrode wires 2 connect with the back side of magnetoelectricity sample 5, and then magnetoelectricity sample is connected on external circuit.
That is, as shown in Figure 2, there are 5 metal electrode lines, wherein 4 metal electrode lines are connected respectively to magnetoelectricity by spun gold line 7
On 4 conductive electrodes 6 of sample 5, in addition a metal electrode lines are connected to the back side of magnetoelectricity sample 5, when metal ferrule 8 connects
When to external circuit, it connect the metal electrode lines-magnetoelectricity sample conductive electrode-at the magnetoelectricity sample back side with metal ferrule-and leads
The connected metal electrode lines of electrode-metal ferrule forms closed circuit, is powered up to magnetic sample to be measured so as to realize
Design.
It should be noted that the embodiment of the present invention does not limit the specific material of the substrate, metal electrode lines and metal ferrule
Matter, but in order to avoid during carrying out survey magnetic to magnetic sample to be measured, substrate, metal electrode lines or metal ferrule also generate
Magnetic field influences the Magnetic Test of magnetic sample to be measured as a result, therefore, optional in the present embodiment, the substrate, the metal electrode
Line and the metal ferrule are non magnetic material.
In one embodiment of the invention, the material of the substrate can be figurate to have under the room temperature such as plastics
Material is able to maintain that excellent insulating properties, optional in the present embodiment in order to accelerate to survey the heat-transfer rate at magnetic sample position
, the material of the substrate can also be preferably aluminum nitride ceramic substrate.When the environmental requirement of magnetic measurement system is more extreme, such as
Low temperature (being less than 2 Kelvins), high temperature (being higher than 500 degrees Celsius), high-intensity magnetic field (being higher than 9 teslas), (air pressure is less than 0.01 to high vacuum
Support) under conditions of, the material of substrate is chosen as aluminium oxide ceramics in the present embodiment.
The size of substrate, metal electrode lines and metal ferrule is not limited in the embodiment of the present invention, for a kind of survey magnetic
System, optionally, the size of substrate is 10 centimeter lengths, 3.5 mm wides, 0.5 millimeters thick, in a plurality of metal electrode of its surface printing
Line does not limit the item number of metal electrode lines in the present embodiment, optionally, as shown in Fig. 2, metal electrode lines are 5, and metal
The line width of electrode wires is chosen as 0.3 millimeter, and 0.3 millimeter of line spacing, line thickness is 200 millimeters.In order to enable magnetic sample to be measured exists
One end of the test center of the magnetic measurement system, the metal electrode lines is connect with the metal ferrule of substrate first end, the other end away from
It it is 35 millimeters with a distance from the second end of substrate.In other magnetic measurement systems, substrate in the present embodiment, metal electrode lines size
It can require simply to be changed according to different magnetic measurement systems, this do not limited in the embodiment of the present invention.By simply more
Change the size of specimen holder, so that it may to be suitable for other magnetic measurement systems, there is stronger versatility.
In addition, in the embodiment of the present invention, quickly inserted in order to enable the metal ferrule 8 can be realized in practical applications
It pulls out, and can avoid occurring bad contact or short circuit phenomenon between external circuit, as shown in Figure 1, in the base for surveying magnetic specimen holder
The first end of plate is additionally provided with fast insert-pull interface 4, and fast insert-pull interface 4 includes ambroin port, the ambroin end
Choma protects multiple metal ferrules 8 around multiple metal ferrules 8, and makes 8 mutual insulating of multiple metal ferrules, to
In actual application, it can quickly and reliably be plugged between the interface on realization metal ferrule and equipment.
It should be noted that not breaking to ensure between metal electrode lines 2 and metal ferrule 8 that junction can consolidate
It splits, being additionally provided with lead with the junction of metal ferrule 8 in metal electrode lines 2 as shown in figures 1 and 3, in the present embodiment connects
Protective case 3, the connection for the metal electrode lines that the lead connection protective case 3 prints on the end of metal ferrule 8 and substrate
Place, outside are ambroin, inside filling insulating epoxy, to carry out the end of metal electrode lines 2 and metal ferrule 8
It is fixed, it avoids when repeatedly surveying magnetic, surveys magnetic specimen holder in multiple swapping process, metal electrode lines 2 occur and metal ferrule 8 connects
The problem of connecing place's fracture.
Survey magnetic specimen holder provided in an embodiment of the present invention includes mainly substrate, metal electrode lead and metal ferrule, passes through
With constitute complete closed circuit together with external switch and control circuit, realize under conditions of loading external voltage or power supply, together
When test sample magnetism.In addition, survey magnetic specimen holder provided in an embodiment of the present invention can be compatible with variation magnetic field and temperature field item
Electricity under part transports test, and simple in structure, and cost is more cheap.
In addition, survey magnetic specimen holder provided in an embodiment of the present invention, can measure magneto-electric coupled sample, such as single-phase or complex phase is made pottery
The electromagnetic interaction of the materials such as porcelain, monocrystalline or film, can in extreme conditions such as high-intensity magnetic field, extremely low temperature, high temperature and high vacuum,
The reverse magnetoelectric effect of magnetoelectricity multi-iron material is tested, and is had to magnetic response of the characterization material under extra electric field or current condition
High sensitivity.
It should be noted that the current forms that the survey magnetic specimen holder provided in the embodiment of the present invention applies external circuit are not
It limits, direct current or alternating voltage or current signal can be applied, while can also pass through with readback voltage or current strength
Multichannel applies electric field or electric current.
Illustrate the performance provided by the invention for surveying magnetic specimen holder below by experiment, it is specific as follows：
First, the back end signal condition of survey magnetic specimen holder provided by the invention under no-load condition itself is tested.
Pass through vibrating example in comprehensive physical property measuring system using the survey magnetic specimen holder referred in the embodiment of the present invention
Magnetometer option realizes the measurement of sample macroscopic view hysteresis loop.
As shown in figure 4, for survey magnetic specimen holder provided in an embodiment of the present invention in the case of unloaded (sample is not installed)
M-H curves, figure 4, it is seen that back end signal reaches substantially under 0.3 tesla (i.e. horizontal axis is+0.3T and -0.3T) magnetic field
To saturation (2 × 10-6Emu) (value for taking magnetic moment absolute value larger).And the resolution ratio higher of test itself, i.e. measuring accuracy are very
Height reaches 1 × 10-7Emu magnitudes.By the M-H tracing analysis to being obtained under survey magnetic specimen holder no-load condition, it is known that surveying
The back end signal of magnetic specimen holder itself is very low, and faint soft ferromagnetic is presented, to the survey magnetic influence of magnetoelectricity multi-iron material compared with
It is small.
Secondly, after loading magnetic sample to be measured, the case where being detected to magnetic sample to be measured.
With in 0.7PbMg in the present embodiment1/3Nb2/3O3-0.3PbTiO3In Piezoelectric Substrates, 60 nanometers are grown with magnetic control
Co0.4Fe0.4B0.2Ferromagnetic thin film constitutes typical ferromagnetic/ferro-electricity compound film sample, tests magnetic moment of the sample after demagnetization
With the change curve of external electric field, as a result as shown in Fig. 5, for survey magnetic specimen holder on load magnetic sample to be measured after, measure it is ferromagnetic/
The M-E curves of ferro-electricity compound film.
The present embodiment obtains the magnetic moment variation loop line of magnetic sample to be measured by 2400 serial source tables, to scan back and forth electric field
With the electric current for flowing through sample.From fig. 5, it can be seen that the magnetic moment of magnetic sample to be measured can be realized under the action of external electric field just
Reversion is without the driving by externally-applied magnetic field between value and negative value, namely illustrates, survey magnetic sample provided in an embodiment of the present invention
Product bar can realize that individually magnetic is surveyed in power-up, drives without external magnetic field.
It is magnetic weaker that survey magnetic specimen holder itself provided in an embodiment of the present invention is can be seen that by above-mentioned experimental data, and
It can realize that magnetic is surveyed in the power-up to sample.Namely realize by applying electric field or electric current in situ to sample, characterize the macro of sample
It sees magnetic.
Survey magnetic specimen holder provided in an embodiment of the present invention includes mainly substrate, metal electrode lead and metal ferrule, passes through
With constitute complete closed circuit together with external switch and control circuit, realize under conditions of loading external voltage or power supply, together
When test sample magnetism.In addition, survey magnetic specimen holder provided in an embodiment of the present invention can be compatible with variation magnetic field and temperature field item
Electricity under part transports test, and simple in structure, and cost is more cheap.
The embodiment of the present invention also provides a kind of magnetic measurement system, as shown in fig. 6, power supply 10, control device 20, coil 30, horse
Up to 40 and survey magnetic specimen holder 50, wherein the magnetic specimen holder 50 of surveying is the survey magnetic specimen holder described in above example；Survey magnetic sample
The metal ferrule of product bar 50 is electrical connected with power supply 10, surveys magnetic specimen holder 50 and is mounted on motor 40；Survey the of magnetic specimen holder 50
Two ends pass through coil 30, coil 30 to be correspondingly arranged with the position for surveying magnetic sample to be measured on magnetic specimen holder 50；Coil 3030 and control
Device 20 is connected；Control device 20 is connected with power supply 10, motor 40；It is to survey magnetic specimen holder 50 to supply that control device 20, which controls power supply 10,
Electricity is powered up to surveying magnetic specimen holder 50, and controls motor 40 and survey magnetic specimen holder 50 is driven to vibrate so that coil 30 converts magnetic signal
Control device 20 is fed back to for electric signal, obtains the magnetic parameter for surveying sample on magnetic specimen holder 50.
It should be noted that be the schematic diagram of magnetic measurement system shown in Fig. 6, in practical work process, the survey magnetic
System can also include other structures component, not limited this in the present embodiment.The operation principle of the magnetic measurement system is：
After the completion of each structure connects, power supply 10 provides electric energy to magnetic specimen holder 50 is surveyed, and surveys on magnetic specimen holder 50 and carries
Sample forms closed circuit with external circuit, and sample generates magnetic field in the case of power-up, under the drive of motor 40, surveys magnetic
Specimen holder 50 is vibrated with certain frequency, and the magnetic sample to be measured surveyed on magnetic specimen holder 50 vibrates therewith, due to magnetic sample to be measured and line
It encloses 30 positions to be correspondingly arranged, coil 30 cuts the magnetic induction line that magnetic sample to be measured generates, and generates alternating current namely coil 30 by magnetic field
Signal is converted to electric signal, then sends control device 20 to by external signal amplifying circuit, and the control device 20 is according to electricity
Signal acquisition is converted to magnetic parameter.
Since motor 40 needs, to the 50 offer vibration of magnetic specimen holder is surveyed, the quick of magnetic specimen holder 50 to be surveyed described in the present embodiment
Connecting-disconnecting interface is connected on the interface of motor 40, is connected on power supply 10 by motor 40, and closed circuit is formed.
The control device 20 is not limited in the present embodiment, control device 20 can be arbitrarily have control function and
Device with computing function, optional in the present embodiment, the control device 20 is computer.
It should be noted that in the embodiment of the present invention, may be used also between external circuit and the conductive electrode of magnetic sample to be measured
To include variable connector.
As shown in fig. 7, introduce variable connector in external circuits, the number of the variable connector, to this in the present embodiment
It does not limit, as long as number is more than the conductive electrode number on magnetic sample to be measured.Variable connector can be controlled per all the way
The state of on and off.
The multichannel strips of conductive electrode 6 for surveying the growth of magnetic sample surfaces is connected to multichannel by metal electrode lines and metal ferrule
Switch realizes the connecting and disconnecting of the circuit that each conductive electrode of sample surfaces is individually controlled outside test system.In the present embodiment, magnetic to be measured
Sample is in 0.7PbMg1/3Nb2/3O3-0.3PbTiO3Piezoelectric substrate surface grows four Co0.4Fe0.4B0.2Ferromagnetic strip shaped electric poles,
By controlling variable connector, open the circuit of four strips of conductive electrodes successively, to obtain total magnetic moment of magnetic sample to be measured with
The step of outer control circuit responds, as shown in figure 8, to test each electrode of ferromagnetic/ferro-electricity compound film with survey magnetic specimen holder
Switch response curve.As can be seen from Figure 8, the magnetic moment of four conductive electrodes is essentially identical with the response of external control circuit.
It should be noted that on the basis of magnetic measurement system provided by the invention, magnetic measurement system can also include magnet, such as scheme
Shown in 9, magnet 60 can also be set around the magnetic sample to be measured for surveying magnetic specimen holder, magnet 60 is for changing the survey magnetic sample
The magnetism of magnetic sample to be measured on bar 50.On the basis of magnetic is surveyed in power-up, which can also realize that change magnetic-field measurement is to be measured
The magnetism of magnetic sample, namely realize the dual measurement that magnetic is surveyed in power-up and magnetic is surveyed in magnetic field change, magnetic is surveyed into power-up and magnetic field changes survey
Magnetic is compatible in a set of magnetic measurement system.
Additional embodiment of the present invention also provides a kind of survey magnetism method, is applied to the magnetic measurement system described in a upper embodiment
In, as shown in Figure 10, to survey magnetism method flow diagram, the survey magnetism method specifically includes：
S101：Magnetic sample to be measured is placed on the substrate of specimen holder；
S102：The magnetic sample to be measured and the metal electrode lines are electrically connected；
S103：The survey magnetic specimen holder is installed to the corresponding position of the magnetic measurement system；
S104：To the magnetic sample to be measured power-up on the survey magnetic specimen holder, and control motor starting；
S105：Magnetic Measurement is carried out to the magnetic sample to be measured, obtains magnetic parameter.
Wherein, after to surveying the magnetic sample to be measured power-up on magnetic specimen holder, using control device starter motor, motor is controlled
Survey magnetic specimen holder is driven to be vibrated with certain frequency, magnetic sample to be measured vibrates back and forth in coil, and friendship is generated in coil
Signal is flowed, control device is converted into surveying the macroscopic magnetization of magnetic sample, to obtain magnetism by acquiring the AC signal in coil
Parameter.
Survey magnetism method provided in an embodiment of the present invention applies the magnetic measurement system described in a upper embodiment, can realize and add
Electrical measurement magnetic, to provide more schemes for the Magnetic Measurement of magnetoelectricity multi-iron material.
It should be noted that each embodiment in this specification is described in a progressive manner, each embodiment weight
Point explanation is all difference from other examples, and the same or similar parts between the embodiments can be referred to each other.
It should also be noted that, herein, relational terms such as first and second and the like are used merely to one
Entity or operation are distinguished with another entity or operation, without necessarily requiring or implying between these entities or operation
There are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to contain
Lid non-exclusive inclusion, so that article or equipment including a series of elements include not only those elements, but also
Including other elements that are not explicitly listed, or further include for this article or the intrinsic element of equipment.Do not having
In the case of more limitations, the element that is limited by sentence "including a ...", it is not excluded that in the article for including above-mentioned element
Or there is also other identical elements in equipment.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (9)
1. a kind of survey magnetic specimen holder, which is characterized in that including：
Substrate, the substrate include being oppositely arranged first end and second end；
A plurality of metal electrode lines on the substrate, the length direction of a plurality of metal electrode lines is along the of the substrate
The direction of second end is directed toward in one end, mutually insulated between a plurality of metal electrode lines；
Positioned at multiple metal ferrules of the first end of the substrate, one end of the metal ferrule and the metal electrode lines is one by one
It is corresponding to be electrically connected；
Wherein, the substrate, the metal electrode lines and the metal ferrule are non magnetic material, and the substrate is for carrying
Magnetic sample to be measured, a surface of a connection magnetic sample to be measured in a plurality of metal electrode lines, remaining described gold
The other end for belonging to electrode wires is connected with another surface of the magnetic sample to be measured, and the other end of the metal ferrule is connected to outside
Power supply, the external power supply, the metal ferrule, the metal electrode lines and the magnetic sample to be measured form closed circuit.
2. survey magnetic specimen holder according to claim 1, which is characterized in that the first end of the substrate connects for fast insert-pull
Mouthful, the fast insert-pull interface includes ambroin port, and the ambroin port is around multiple metal ferrules, to institute
Metal ferrule is stated to be protected.
3. survey magnetic specimen holder according to claim 1, which is characterized in that the material of the substrate is plastics.
4. survey magnetic specimen holder according to claim 1, which is characterized in that the material of the substrate is aluminium oxide ceramics.
5. survey magnetic specimen holder according to claim 1, which is characterized in that the material of the substrate is aluminium nitride ceramics.
6. a kind of magnetic measurement system, which is characterized in that including：Power supply, control device, coil, motor and survey magnetic specimen holder；
Wherein, the magnetic specimen holder of surveying is the survey magnetic specimen holder described in claim 1-5 any one；
The metal ferrule for surveying magnetic specimen holder is electrical connected with the power supply, and the survey magnetic specimen holder is mounted under the motor
Side；
The second end for surveying magnetic specimen holder passes through the coil, the coil and magnetic sample to be measured on the survey magnetic specimen holder
Position is correspondingly arranged；
The coil is connected with the control device；
The control device is connected with the power supply, the motor；
The control device controls the power supply and powers for the survey magnetic specimen holder, is powered up to the survey magnetic specimen holder, and control
The motor drives the survey magnetic specimen holder vibration so that magnetic signal is converted to electric signal and feeds back to the control by the coil
Device obtains the magnetic parameter of sample on the survey magnetic specimen holder.
7. magnetic measurement system according to claim 6, which is characterized in that also set between the survey magnetic specimen holder and the power supply
It is equipped with variable connector, is selected for the conductive electrode to the magnetic sample to be measured on the survey magnetic specimen holder.
8. the magnetic measurement system described according to claim 6 or 7, which is characterized in that the magnetic sample to be measured position for surveying magnetic specimen holder
Magnet is additionally provided with around setting, the magnet is for changing the magnetism for surveying magnetic sample to be measured on magnetic specimen holder.
9. a kind of survey magnetism method, which is characterized in that apply in the magnetic measurement system described in claim 6, the survey magnetism method packet
It includes：
Magnetic sample to be measured is placed on the substrate of specimen holder；
The magnetic sample to be measured and the metal electrode lines are electrically connected；
The survey magnetic specimen holder is installed to the corresponding position of the magnetic measurement system；
To the magnetic sample to be measured power-up on the survey magnetic specimen holder, and control motor starting；
Magnetic Measurement is carried out to the magnetic sample to be measured, obtains magnetic parameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810213397.0A CN108414955A (en) | 2018-03-15 | 2018-03-15 | A kind of survey magnetic specimen holder, magnetic measurement system and survey magnetism method |
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| CN201810213397.0A CN108414955A (en) | 2018-03-15 | 2018-03-15 | A kind of survey magnetic specimen holder, magnetic measurement system and survey magnetism method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110333465A (en) * | 2019-07-22 | 2019-10-15 | 杨培成 | A kind of dynamic sample magnetic strength instrument |
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