JPH07104182B2 - Photodetection method using oxide superconductor - Google Patents
Photodetection method using oxide superconductorInfo
- Publication number
- JPH07104182B2 JPH07104182B2 JP12586987A JP12586987A JPH07104182B2 JP H07104182 B2 JPH07104182 B2 JP H07104182B2 JP 12586987 A JP12586987 A JP 12586987A JP 12586987 A JP12586987 A JP 12586987A JP H07104182 B2 JPH07104182 B2 JP H07104182B2
- Authority
- JP
- Japan
- Prior art keywords
- superconducting
- temperature
- detected
- magnetic field
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Optical Transform (AREA)
- Measuring Magnetic Variables (AREA)
- Measurement Of Current Or Voltage (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Radiation Pyrometers (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、温度，外部磁場，印加電流，圧力を検出する
為に好適な検出方法に係り、特に0,1動作を必要とする
各種センサや読取り機構に利用するのに好適な検出方法
に関する。The present invention relates to a detection method suitable for detecting temperature, external magnetic field, applied current, and pressure, and in particular, various sensors requiring 0, 1 operation. And a detection method suitable for use in a reading mechanism.
本発明は、酸化物超伝導物質を検出素子とし、光によつ
て検出する方法である。The present invention is a method in which an oxide superconducting substance is used as a detection element and is detected by light.
受光装置の多様化は近年急速に進んでおり、光検出器の
材料として多くの物質が提案されている。たとえば「オ
プトロニクス」1983年No.7第36〜43頁を参照。In recent years, the diversification of light receiving devices has progressed rapidly, and many substances have been proposed as materials for photodetectors. See, for example, Optronics, 1983 No. 7, pages 36-43.
従来技術は、酸化物超伝導物質を検出素子として用いる
点については十分に配慮されていない。これは、従来の
超伝導物質の転移温度が低く、実用化に不十分なためで
ある。The prior art does not give sufficient consideration to the use of an oxide superconducting material as a detection element. This is because the transition temperature of the conventional superconducting material is low and it is insufficient for practical use.
本発明の目的は、従来配慮されていなかつた酸化物超伝
導物質の適用によつて、検出機構を構成することにあ
る。An object of the present invention is to construct a detection mechanism by applying an oxide superconducting material which has not been considered in the past.
上記目的は、各種検出機構の検知部分に酸化物超伝導物
質を用いて、その超伝導−常伝導転移を光学的に読み出
すことにより達成される。The above-mentioned object is achieved by using an oxide superconducting substance in the detecting portion of various detecting mechanisms and optically reading out the superconducting-normal transition.
具体的には、磁界の強さ、温度、電流及び圧力の少なく
とも１つについて少なくとも２つの異なる領域を有する
被検出体の近傍に酸化物超電導物質よりなる検出素子を
配備すること、前記被検出体に外部磁界，温度，電流及
び圧力の少なくとも１つを印加し少なくとも２つの異な
る領域を保有させること、前記被検出体と前記検出素子
とを相対的に移動させ前記被検出体の保有する領域に対
応させて検出素子を超伝導−常伝導転移させること、前
記検出素子に光を照射し前記超電導−常伝導転移を透過
率，反射率，屈折率の変化として取り出し前記被検出体
の磁界強さ，電流，温度，圧力の少なくとも１つの分布
状態を検出することを特徴とする酸化物超伝導物質によ
る光検出方法にある。Specifically, a detection element made of an oxide superconducting material is provided in the vicinity of a detection target having at least two different regions for at least one of magnetic field strength, temperature, current and pressure, and the detection target. At least one of an external magnetic field, temperature, current, and pressure is applied to hold at least two different areas, and the detected body and the detection element are moved relatively to each other to the area held by the detected body. Correspondingly, the detection element is caused to undergo a superconducting-normal conduction transition, and the detection element is irradiated with light to take out the superconducting-normal conduction transition as a change in transmittance, reflectance and refractive index, and the magnetic field strength of the object to be detected. The method for detecting light by an oxide superconducting material is characterized by detecting at least one distribution state of current, temperature and pressure.
酸化物超伝導物質は、応用物理；第56巻第５号605頁−6
12頁に開示されているように、1986年ミューラー（Ｍ
ller）に発見され、以後開発されている金属酸化物超伝
導物質を指し、従来の超伝導物質より高い転移温度を有
することを特徴とする。Applied physics for oxide superconducting materials; Vol. 56, No. 5, page 605-6.
As disclosed on page 12, 1986 Mueller (M
ller), which is a metal oxide superconducting material that has been developed since then and is characterized by having a higher transition temperature than conventional superconducting materials.
第２図に酸化物超伝導物質の超伝導−常伝導相と温度，
外部磁場，印加電流との関係を示す。斜線で示した曲面
内部の部分が超電導相１であり、曲面外部が常電導相２
である。即ち、超電導相は温度，外部磁場，印加電流を
上げることにより常電導相に変えることが可能である。
又、第２図には示していないが、同様に酸化物超伝導物
質に圧力を加えて格子を変形し、超電導相を常電導相に
変えることが可能である。Fig. 2 shows the superconductivity-normal phase and temperature of oxide superconductors.
The relationship between the external magnetic field and the applied current is shown. The superconducting phase 1 is inside the curved surface and the normal conducting phase 2 is outside the curved surface.
Is. That is, the superconducting phase can be changed to the normal conducting phase by increasing the temperature, the external magnetic field and the applied current.
Although not shown in FIG. 2, it is also possible to apply pressure to the oxide superconducting material to deform the lattice and change the superconducting phase to the normal conducting phase.
酸化物超伝導物質の透過率，反射率は第３図，第４図に
示した様に超伝導−常伝導相転移によつて変化する。従
つて、酸化物超伝導物質がいずれの相にあるかは透過光
又は反射光を観測することによつて容易に判別可能であ
り、これによつて酸化物超伝導物質の置かれた温度，外
部磁場，印加電流及び圧力が設定の値と比較して大きい
か小さいかの検出を行なうことが可能である。特に、温
度，外部磁場，印加電流及び圧力のうち、検出したい主
変数以外の３つの従変数を変えることによつて、相転移
をする主変数の設定値を変えることができる。The transmittance and reflectance of the oxide superconducting material change depending on the superconducting-normal conducting phase transition as shown in FIGS. 3 and 4. Therefore, which phase the oxide superconducting material is in can be easily discriminated by observing the transmitted light or the reflected light, whereby the temperature at which the oxide superconducting material is placed, It is possible to detect whether the external magnetic field, applied current and pressure are larger or smaller than the set values. In particular, by changing three sub-variables other than the main variable to be detected among the temperature, the external magnetic field, the applied current, and the pressure, the set value of the main variable that causes the phase transition can be changed.
本発明の一実施例を第１図により説明する。 An embodiment of the present invention will be described with reference to FIG.
超電導薄膜３は透明保持体４の上にスパツタリングによ
り作成される。入射光５は超電導薄膜３で反射され、反
射光６が検出される。この反射光６により超電導薄膜３
が常電導相か超電導相かが判別される。超電導薄膜３
は、磁性体７の上を移動し、磁性体７の磁化の状態によ
り超伝導−常伝導転移をすみやかに生じ、その変化は反
射光６により検出される。従つて本構造によつて、磁性
体７の磁化の状態を0/1的に読み出すことが可能であ
る。The superconducting thin film 3 is formed on the transparent holder 4 by spattering. Incident light 5 is reflected by the superconducting thin film 3 and reflected light 6 is detected. By this reflected light 6, the superconducting thin film 3
It is determined whether is a normal conducting phase or a superconducting phase. Superconducting thin film 3
Moves over the magnetic body 7 and promptly causes a superconducting-normal transition due to the state of magnetization of the magnetic body 7, and the change is detected by the reflected light 6. Therefore, according to this structure, it is possible to read the magnetization state of the magnetic body 7 in a 0/1 manner.
本発明は、検出機構への酸化物超伝導物質の適用であ
る。本発明により、酸化物超伝導物質の超電導−常電導
転移によつて磁場，温度，印加電流，圧力を検知し、光
学的な出力として取り出すことができる。The present invention is the application of oxide superconducting materials to the detection mechanism. According to the present invention, the magnetic field, temperature, applied current and pressure can be detected by the superconducting-normal conducting transition of the oxide superconducting substance, and can be taken out as an optical output.
本発明は温度，外部磁場，印加電流及び圧力に対するセ
ンサとして適用され、なかでも磁気リーダーをはじめと
した微小部分の検出を行なう機構の構成が可能になる効
果がある。INDUSTRIAL APPLICABILITY The present invention is applied as a sensor for temperature, external magnetic field, applied current and pressure, and has an effect of enabling the construction of a mechanism for detecting a minute portion such as a magnetic reader.
第１図は本発明の一実施例の磁気読み取り機構の概略構
成図である。第２図は酸化物超伝導物質の超伝導−常伝
導相と、温度，外部磁場，印加電流との関係図である。
第３図は超電導相と常電導相の光透過率と波長との関係
図、第４図は超電導相と常電導相の光反射率と波長との
関係図である。 １……超電導相、２……常電導相、３……超電導薄膜、
４……保持体、５……入射光、６……反射光、７……磁
性体。FIG. 1 is a schematic configuration diagram of a magnetic reading mechanism according to an embodiment of the present invention. FIG. 2 is a diagram showing the relation between the superconducting-normal phase of an oxide superconducting substance, temperature, external magnetic field, and applied current.
FIG. 3 is a diagram showing the relationship between the light transmittance and the wavelength of the superconducting phase and the normal conducting phase, and FIG. 4 is a diagram showing the relationship between the light reflectance and the wavelength of the superconducting phase and the normal conducting phase. 1 ... Superconducting phase, 2 ... Normal conducting phase, 3 ... Superconducting thin film,
4 ... Holder, 5 ... Incident light, 6 ... Reflected light, 7 ... Magnetic material.
Claims (1)
とも１つについて少なくとも２つの異なる領域を有する
被検出体の近傍に酸化物超伝導物質よりなる検出素子を
配備すること、前記被検出体に外部磁界、温度、電流及
び圧力の少なくとも１つを印加し少なくとも２つの異な
る領域を保有させること、前記被検出体と前記検出素子
とを相対的に移動させ前記被検出体の保有する領域に対
応させて検出素子を超伝導−常伝導転移させること、前
記検出素子に光を照射し前記超伝導−常伝導転移を光学
特性の変化として取り出し前記被検出体の磁界強さ、電
流、温度、圧力の少なくとも１つの分布状態を検出する
ことを特徴とする酸化物超伝導物質による光検出方法。1. A detection element made of an oxide superconducting material is disposed in the vicinity of an object to be detected having at least two different regions for at least one of magnetic field strength, temperature, current and pressure, and the object to be detected. Applying at least one of an external magnetic field, temperature, current and pressure to the body to hold at least two different areas, and moving the detection object and the detection element relative to each other, the area held by the detection object Corresponding to the superconducting-normal conduction transition of the detection element, the detection element is irradiated with light to take out the superconducting-normal conduction transition as a change in optical characteristics, the magnetic field strength, current, temperature of the object to be detected. A method for detecting light by an oxide superconducting material, characterized in that at least one distribution state of pressure is detected.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12586987A JPH07104182B2 (en) | 1987-05-25 | 1987-05-25 | Photodetection method using oxide superconductor |
| DE3817568A DE3817568C2 (en) | 1987-05-25 | 1988-05-24 | Optical modulator with a superconducting oxide |
| US07/431,231 US5110792A (en) | 1987-05-25 | 1989-11-03 | Method and apparatus of optical modulation using superconductive oxide material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12586987A JPH07104182B2 (en) | 1987-05-25 | 1987-05-25 | Photodetection method using oxide superconductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63290927A JPS63290927A (en) | 1988-11-28 |
| JPH07104182B2 true JPH07104182B2 (en) | 1995-11-13 |
Family
ID=14920945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12586987A Expired - Fee Related JPH07104182B2 (en) | 1987-05-25 | 1987-05-25 | Photodetection method using oxide superconductor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07104182B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113029806B (en) * | 2021-03-04 | 2022-09-13 | 武汉科技大学 | Visual detection equipment for high-temperature performance of material with external magnetic field |
-
1987
- 1987-05-25 JP JP12586987A patent/JPH07104182B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63290927A (en) | 1988-11-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |