JP2567386B2 - Superconducting conductor - Google Patents
Superconducting conductorInfo
- Publication number
- JP2567386B2 JP2567386B2 JP62044266A JP4426687A JP2567386B2 JP 2567386 B2 JP2567386 B2 JP 2567386B2 JP 62044266 A JP62044266 A JP 62044266A JP 4426687 A JP4426687 A JP 4426687A JP 2567386 B2 JP2567386 B2 JP 2567386B2
- Authority
- JP
- Japan
- Prior art keywords
- superconducting
- stabilizing material
- superconducting conductor
- conductor according
- substance
- 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 - Lifetime
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ この発明は、たとえば超電導マグネット等に用いられ
る超電導導体に関するものである。TECHNICAL FIELD The present invention relates to a superconducting conductor used in, for example, a superconducting magnet.
なお、この明細書において「超電導導体」というとき
は、超電導性を示す超電導物質とこのような超電導物質
の超電導状態を安定にするための安定化材との複合した
構造を指すものとする。In this specification, the term "superconducting conductor" refers to a composite structure of a superconducting substance exhibiting superconductivity and a stabilizer for stabilizing the superconducting state of such a superconducting substance.
［従来の技術］ 従来、超電導物質として、金属系、セラミック系、有
機物系のものがあるが、このうち、セラミック系のもの
で、層状ペロブスカイト型（K2NiF4型）の結晶構造をも
つ超電導物質が、より高い臨界温度をもつことが判明し
てきた。たとえば、［LaSr］2CuO4または［LaBa］2CuO4
のような酸化物セラミック系超電導物質では、30K以上
の臨界温度を示している。[Prior Art] Conventionally, there are metal-based, ceramic-based, and organic-based superconducting materials. Among them, ceramic-based superconducting materials having a layered perovskite (K 2 NiF 4 type) crystal structure It has been found that the material has a higher critical temperature. For example, [LaSr] 2 CuO 4 or [LaBa] 2 CuO 4
The oxide ceramic superconducting materials such as the above show a critical temperature of 30 K or higher.
［発明が解決しようとする問題点］ しかしながら、上述したようなセラミック系の超電導
物質は、たとえば金属系の超電導物質に比べると、機械
的に脆く、金属のような加工を行なうことができないと
いう難点がある。[Problems to be Solved by the Invention] However, the above-described ceramic-based superconducting material is mechanically brittle compared to, for example, a metal-based superconducting material, and cannot be processed like metal. There is.
そこで、この発明は、臨界温度を高くできるという、
層状ペロブスカイト型の結晶構造を持つ超電導物質の優
れた性質を生かしつつ、安定化材をも含めた超電導導体
としての加工性を向上させ、安定度の高い超電導導体を
提供しようとするものである。Therefore, the present invention can increase the critical temperature,
The present invention aims to provide a superconducting conductor having high stability by improving the workability as a superconducting conductor including a stabilizer while making use of the excellent properties of a superconducting substance having a layered perovskite type crystal structure.
［問題点を解決するための手段］ この発明は、上述した技術的課題を解決するため、層
状ペロブスカイト型の結晶構造をもつ超電導物質と安定
化材とを、交互に積層してなる多層構造を少なくとも一
部に備えるとともに、安定化材が金属の気相法によって
形成されたものであり、かつ、超電導物質の層は、溝切
り加工により分割されていることを特徴とする。[Means for Solving the Problems] In order to solve the above-mentioned technical problem, the present invention provides a multilayer structure in which a superconducting material having a layered perovskite type crystal structure and a stabilizing material are alternately laminated. It is characterized in that it is provided in at least a part, the stabilizing material is formed by a metal vapor phase method, and the layer of the superconducting material is divided by grooving.
なお、好ましい実施例では、超電導物質は、スパッタ
リングやCVDのような気相法により形成されたり、金属
アルコキシドの脱水縮合反応により形成されたりするこ
とができる。In a preferred embodiment, the superconducting substance can be formed by a vapor phase method such as sputtering or CVD, or can be formed by a dehydration condensation reaction of metal alkoxide.
また、超電導物質としては、上述したような（Lax-1S
rx）2CuO4または（Lax-1Bax）2CuO4で表わされるような
組成をもつものも含めて、一般式（Ax-1Bx）2CD4-y［０
＜ｘ＜１、０≦ｙ＜４］で表わされる組成を有するもの
が用いられ得る。ここで、Ａはランタン系列の元素の少
なくとも一種、ＢはI a、II a、およびIII a族元素の少
なくとも一種、ＣはI b、II bおよびIII b族元素ならび
に遷移元素の少なくとも一種、およびＤは酸素、硼素、
炭素、窒素、フッ素およびイオウからなるグループから
選ばれた少なくとも一種である。In addition, as the superconducting substance, as described above (La x-1 S
r x ) 2 CuO 4 or (La x-1 Ba x ) 2 CuO 4 , including those having a composition represented by the general formula (A x-1 B x ) 2 CD 4-y [0
A material having a composition represented by <x <1, 0 ≦ y <4] can be used. Where A is at least one of the lanthanide series elements, B is at least one of the Ia, IIa, and IIIa group elements, C is at least one of the Ib, IIb and IIIb group elements, and transition elements, and D is oxygen, boron,
At least one selected from the group consisting of carbon, nitrogen, fluorine and sulfur.
［発明の作用および効果］ この発明によれば、安定化材となる金属の層を、たと
えばスパッタリングやプラズマCVD等の気相法によって
形成するため、機械的に脆い層状ペロブスカイト型の結
晶構造をもつ超電導物質に、加工歪等を加えることなく
安定化材を付加することができ、また、安定化材が超電
導物質の機械的強度を補うことになる。さらに、溝切り
加工により超電導物質の層を分割することによって、導
体の磁気安定性を向上させることができる。したがっ
て、安定度の高い超電導導体が得られる。[Operation and Effect of the Invention] According to the present invention, a metal layer serving as a stabilizer is formed by a vapor phase method such as sputtering or plasma CVD, and therefore has a mechanically fragile layered perovskite type crystal structure. The stabilizing material can be added to the superconducting material without adding processing strain, and the stabilizing material supplements the mechanical strength of the superconducting material. Furthermore, the magnetic stability of the conductor can be improved by dividing the layer of superconducting material by grooving. Therefore, a superconducting conductor with high stability can be obtained.
［実施例］ 第１図は、この発明の第１実施例の超電導導体の拡大
断面図である。[Embodiment] FIG. 1 is an enlarged sectional view of a superconducting conductor according to a first embodiment of the present invention.
まず、第１図に示した積層構造の厚み方向の中心部を
なすものとして、純度の高いたとえば銅からなるテープ
１が用意される。テープ１は、板に置き換えられてもよ
い。テープ１は安定化材として機能するもので、その両
面にスパッタリングにより、La1.6Sr0.4CuO4の超電導物
質層2,2が厚さ0.01mmをもって形成され、さらに、これ
ら超電導物質層2,2の外面に、スパッタリングにより、
たとえば銅からなる安定化材層3,3が厚さ0.02mmをもっ
て形成される。First, a tape 1 made of, for example, copper having high purity is prepared as a central part in the thickness direction of the laminated structure shown in FIG. The tape 1 may be replaced by a plate. The tape 1 functions as a stabilizing material, and the superconducting material layers 2 and 2 of La 1.6 Sr 0.4 CuO 4 are formed with a thickness of 0.01 mm on both sides of the superconducting material layers 2 and 2 by sputtering. On the outer surface, by sputtering,
Stabilizer layers 3, 3 made of copper, for example, are formed with a thickness of 0.02 mm.
第２図は、この発明の第２実施例の超電導導体を示す
拡大断面図である。FIG. 2 is an enlarged sectional view showing a superconducting conductor according to the second embodiment of the present invention.
第２図では、中心には安定化材として働くたとえば9
9.9999％以上の純度のアルミニウムからなる線４が配置
される。線４の外周には、金属アルコキシドを脱水縮合
させる方法（ゾルゲル法）を用いて、厚さ0.01mmのLa
1.6Ba0.4CuO4の超電導物質層５が形成される。超電導物
質層５に対して、好ましくは、たとえば電子線描画装置
を用いたビームエッチング等を適用して、螺旋状に延び
る溝切り加工を施し、磁気安定性を向上させるための細
分割が行なわれる。さらに、この超電導物質層５の外周
には、前述した純度と同じ純度をもつアルミニウムをも
って、厚さ0.02mmの安定化材層６が形成される。以下、
同様の方法を二度繰返し、超電導物質層７、安定化材層
８、超電導物質層９および安定化材層10を順次形成し
た。In Fig. 2, for example, 9 acts as a stabilizer in the center.
A wire 4 made of aluminum with a purity of 9.9999% or more is arranged. On the outer circumference of the wire 4, a method of dehydrating and condensing metal alkoxide (sol-gel method) is used to form a La layer having a thickness of 0.01 mm.
A superconducting material layer 5 of 1.6 Ba 0.4 CuO 4 is formed. The superconducting material layer 5 is preferably subjected to, for example, beam etching using an electron beam drawing device to perform spirally extending grooving processing, and subdivision for improving magnetic stability. . Further, a stabilizing material layer 6 having a thickness of 0.02 mm is formed on the outer periphery of the superconducting material layer 5 with aluminum having the same purity as that described above. Less than,
The same method was repeated twice to sequentially form the superconducting material layer 7, the stabilizing material layer 8, the superconducting material layer 9, and the stabilizing material layer 10.
第２図に示すように形成された超電導導体の断面は円
形であり、超電導物質層および安定化材層は同心円状に
交互に積層されている。The superconducting conductor formed as shown in FIG. 2 has a circular cross section, and the superconducting material layers and the stabilizing material layers are alternately laminated concentrically.
上述のように第１および第２実施例で得られた超電導
導体は、いずれも、約36Kで、安定した超電導特性を示
した。As described above, the superconducting conductors obtained in the first and second examples all showed stable superconducting characteristics at about 36K.
なお、上述した図示の実施例からわかるように、この
発明の特徴となる、超電導物質と安定化材とを交互に積
層してなる多層構造は、たとえば第１図のテープ１およ
び第２図の線４に見られるように、気相法やゾルゲル法
によらない形成方法によって得られたものを含んでいて
もよい。図示の実施例では、多層構造の中での１つの安
定化材からなる層１または４が、気相法やゾルゲル法を
用いずに形成されたものであったが、このことは、超電
導物質からなる層についても言えることで、超電導物質
からなる層の１つは、気相法やゾルゲル法によらない加
工法によって得られたものであってもよい。As can be seen from the above-described illustrated embodiments, the multilayer structure, which is a feature of the present invention and is formed by alternately stacking a superconducting substance and a stabilizing material, has, for example, the tape 1 shown in FIG. As shown in the line 4, it may include those obtained by a forming method that does not depend on the vapor phase method or the sol-gel method. In the illustrated example, the layer 1 or 4 made of one stabilizing material in the multilayer structure was formed without using the vapor phase method or the sol-gel method. The same can be said for the layer made of, and one of the layers made of a superconducting substance may be one obtained by a processing method that does not rely on a vapor phase method or a sol-gel method.
また、超電導物質層における超電導状態のより一層の
安定化を図るため、第２図の場合と同様第１図に示した
超電導物質層２に対しても、たとえば電子線描画装置を
用いたビームエッチングを適用して、溝切り加工を施
し、各超電導物質層を形成する超電導物質をフィラメン
ト状に細く延びるようにしてもよい。Further, in order to further stabilize the superconducting state in the superconducting material layer, the superconducting material layer 2 shown in FIG. 1 is also beam-etched by using, for example, an electron beam drawing apparatus as in the case of FIG. May be applied to carry out grooving processing so that the superconducting substance forming each superconducting substance layer is thinly extended in a filament shape.
【図面の簡単な説明】 第１図および第２図は、それぞれ、この発明の第１およ
び第２実施例の超電導導体を示す拡大断面図である。 図において、１は銅からなるテープ、2,5,7,9は超電導
物質層、3,6,8,10は安定化材層、４はアルミニウムから
なる線である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 and FIG. 2 are enlarged sectional views showing superconducting conductors of the first and second embodiments of the present invention, respectively. In the figure, 1 is a tape made of copper, 2, 5, 7, 9 are superconducting material layers, 3, 6, 8, 10 are stabilizing material layers, and 4 is a wire made of aluminum.
Claims (6)
電導物質と安定化材とを、交互に積層してなる多層構造
を少なくとも一部に備え、前記安定化材が金属の気相法
によって形成されたものであり、かつ、前記超電導物質
の層は、溝切り加工により分割されていることを特徴と
する、超電導導体。1. A superconducting material having a layered perovskite type crystal structure and a stabilizing material are provided in at least a part of a multi-layered structure, and the stabilizing material is formed by a metal vapor phase method. A superconducting conductor, wherein the layer of the superconducting material is divided by grooving.
安定化材とが交互に同心円状に積層されていることを特
徴とする、特許請求の範囲第１項記載の超電導導体。2. The superconducting conductor according to claim 1, wherein the superconducting substance has a circular cross section, and the superconducting substance and the stabilizing material are alternately laminated concentrically.
導物質と前記安定化材とを交互に積層してなることを特
徴とする、特許請求の範囲第１項記載の超電導導体。3. A superconducting conductor according to claim 1, wherein the superconducting substance and the stabilizing material are alternately laminated on a tape which functions as a stabilizing material.
4-y［０＜ｘ＜１、０≦ｙ＜４］で表わされる組成を有
するものであり、ここに、Ａはランタン系列の元素の少
なくとも一種、ＢはI a、II aおよびIII a族元素の少な
くとも一種、ＣはI b、II bおよびIII b族元素ならびに
遷移元素の少なくとも一種、およびＤは酸素、ホウ素、
炭素、窒素、フッ素および硫黄からなるグループから選
ばれた少なくとも一種である、特許請求の範囲第１項な
いし第３項のいずれかに記載の超電導導体。4. The superconducting material is represented by the general formula (A 1-x B x ) 2 CD.
4-y [0 <x <1, 0 ≦ y <4], wherein A is at least one element of the lanthanide series, and B is a group of I a, II a and III a At least one of the elements, C is at least one of the elements Ib, IIb and IIIb and transition elements, and D is oxygen, boron,
The superconducting conductor according to any one of claims 1 to 3, which is at least one selected from the group consisting of carbon, nitrogen, fluorine and sulfur.
び／またはストロンチウム、前記Ｃは銅、前記Ｄは酸素
である、特許請求の範囲第４項記載の超電導導体。5. The superconducting conductor according to claim 4, wherein A is lanthanum, B is barium and / or strontium, C is copper, and D is oxygen.
囲第１項ないし第５項のいずれかに記載の超電導導体。6. The superconducting conductor according to claim 1, wherein the stabilizing material is made of copper.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62044266A JP2567386B2 (en) | 1987-02-26 | 1987-02-26 | Superconducting conductor |
| US07/160,115 US5151406A (en) | 1987-02-26 | 1988-02-25 | Laminated superconductor |
| EP19880102899 EP0280322A3 (en) | 1987-02-26 | 1988-02-26 | Laminated ceramic superconductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62044266A JP2567386B2 (en) | 1987-02-26 | 1987-02-26 | Superconducting conductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63211518A JPS63211518A (en) | 1988-09-02 |
| JP2567386B2 true JP2567386B2 (en) | 1996-12-25 |
Family
ID=12686708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62044266A Expired - Lifetime JP2567386B2 (en) | 1987-02-26 | 1987-02-26 | Superconducting conductor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2567386B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6454612A (en) * | 1987-08-24 | 1989-03-02 | Sumitomo Electric Industries | Superconductive structure |
| JP2711253B2 (en) * | 1987-03-18 | 1998-02-10 | インターナショナル・ビジネス・マシーンズ・コーポレーション | Superconducting film and method for forming the same |
| JPS643908A (en) * | 1987-06-26 | 1989-01-09 | Hitachi Ltd | Composite conductor |
| JP2786292B2 (en) * | 1989-01-13 | 1998-08-13 | 株式会社日立製作所 | Copper oxide superconductor containing halogen |
| JPH04298913A (en) * | 1991-04-01 | 1992-10-22 | Semiconductor Energy Lab Co Ltd | Superconducting wire |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61267207A (en) * | 1985-05-21 | 1986-11-26 | 株式会社東芝 | Compound superconductor |
-
1987
- 1987-02-26 JP JP62044266A patent/JP2567386B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63211518A (en) | 1988-09-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5151406A (en) | Laminated superconductor | |
| JP2933225B2 (en) | Metal oxide material | |
| JP2567386B2 (en) | Superconducting conductor | |
| US6392156B1 (en) | High current conductors and high field magnets using anisotropic superconductors | |
| JP2545403B2 (en) | Superconductor | |
| JP2641865B2 (en) | Substrates for electronic devices | |
| JP2950422B2 (en) | Metal oxide material | |
| JPH04170318A (en) | Lamellar copper oxide | |
| JPH1125771A (en) | Oxide superconducting tape material and its manufacture | |
| JPS63233071A (en) | Preparation of superconductive ceramic | |
| JPS63241826A (en) | Manufacture of superconducting wire | |
| JP2703227B2 (en) | Superconductor device | |
| JPH01109612A (en) | Laminate type superconductive plate and its manufacture | |
| JP2585366B2 (en) | Oxide superconducting wire | |
| JP2616986B2 (en) | Manufacturing method of Tl based superconductor laminated film | |
| JPH02311396A (en) | Thin-film superconductor and its production | |
| JPS63274190A (en) | Superconducting thin film | |
| JP2545422B2 (en) | Composite oxide superconducting thin film and method for producing the same | |
| JP2809557B2 (en) | Copper oxide material | |
| JPH03242320A (en) | Oxide superconductor thin film | |
| JPH01280375A (en) | Semiconductor substrate having superconductor layer | |
| JPS63303810A (en) | Ceramic superconductor | |
| JP2525842B2 (en) | Superconducting wire and its manufacturing method | |
| JPH01130420A (en) | Ceramic supercondoctor | |
| JPH06144997A (en) | Copper oxide superconductor and its production |