CN1033122A - 应用辐射线照射由复合氧化物制备常温超导体的方法 - Google Patents
应用辐射线照射由复合氧化物制备常温超导体的方法 Download PDFInfo
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- CN1033122A CN1033122A CN88107397.0A CN88107397A CN1033122A CN 1033122 A CN1033122 A CN 1033122A CN 88107397 A CN88107397 A CN 88107397A CN 1033122 A CN1033122 A CN 1033122A
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- 230000005855 radiation Effects 0.000 title claims abstract description 19
- 239000002887 superconductor Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000002131 composite material Substances 0.000 title claims abstract description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000002245 particle Substances 0.000 claims abstract description 9
- 229910052747 lanthanoid Inorganic materials 0.000 claims abstract description 6
- 150000002602 lanthanoids Chemical class 0.000 claims abstract description 6
- 230000003760 hair shine Effects 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 5
- 229910052706 scandium Inorganic materials 0.000 claims abstract description 5
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 5
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000010894 electron beam technology Methods 0.000 claims abstract description 3
- 238000010884 ion-beam technique Methods 0.000 claims abstract description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 description 7
- 239000000843 powder Substances 0.000 description 5
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 4
- 238000001816 cooling Methods 0.000 description 2
- 229960004643 cupric oxide Drugs 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000011812 mixed powder Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910002480 Cu-O Inorganic materials 0.000 description 1
- 229910009203 Y-Ba-Cu-O Inorganic materials 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 244000144980 herd Species 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 239000008141 laxative Substances 0.000 description 1
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- 238000010298 pulverizing process Methods 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- H10N60/00—Superconducting devices
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- Inorganic Compounds Of Heavy Metals (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
- Superconductor Devices And Manufacturing Methods Thereof (AREA)
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Abstract
一种在液氮温度至室温的温度范围内呈现稳定
超导性质的超导体，其制法是将具有钙钛矿结构的
钇、钪或镧系元素的复合氧化物用一种能导致原子位
移的辐射线进行照射，亦即应用一种带电荷的粒子
束，例如电子束、质子束、重离子束等等，或是一种不
带电荷的粒子束，例如中子束进行照射。
Description
本发明可应用于下述宽广的领域：（1）应用于航天或地下空间存贮电能的超导体;（2）应用于发生、传送或分配电功率同时使电能损耗降至最低的超导体;（3）应用于制成超导体电路或约瑟夫逊结型元件，其制法是应用辐射线对基底上的普通导体薄膜进行照射;（4）应用于利用超导性质的其它各种器件。
常规式电工设备和电子器件都伴随有电能的大量损耗，以及因发热所带来的其它麻烦，迄今为止此一问题仍难于克服。在一种典型的常规方法中，超导体是靠简单地烧结各种氧化物而制成的。但是，应用此种方法，即使是近年来研制成功的高温超导体，其临界温度以绝对温度表示，也只是约90°K或更低，所以仍然不能满足实用要求。
在这些情况下，本发明的主要目的是提供一种制造超导体的方法，该超导体藉辐射线的照射能在液氮温度至室温的温度范围内呈现稳定的超导性质。
为此目的，本发明提供了一种方法，用以制备能在液氮温度至室温的温度范围内呈现稳定的超导性质的超导体，所述方法包括应用一种辐射线对于具有钙钛矿结构的钇、钪或镧系元素的复合氧化物进行照射，所述辐射线应能导致原子位移，亦即用一种带电荷的粒子束，例如一种电子束、质子束、重离子束等等，或者是用一种不带电荷的粒子束，例如一种中子束进行照射。
本发明的方法能够制造出在高温条件下稳定的超导体，而这是迄今为止采用常规材料和技术所不可能制出的，后者能作到的是用烧结法制造能在约100°K或较高的绝对温度呈现稳定超导性质的超导体。
从以下对优选实施方案的说明和附图，即可清楚地了解到本发明的上述目的和其他目的、特点和优越性。
图1所示的是超导体的电阻与绝对温度的关系，其中（a）是用辐射线照射之前的一种母体，（b）和（c）是应用较小辐射剂量照射之后的母体。
图2所示也是超导体的电阻与绝对温度的关系，其中（a′）是用辐射线照射之前的一种母体，（b′）和（c′）是用较大辐射剂量照射之后的母体。
下文将对本发明进行更具体的描述。
Ⅰ）母体（precusor）之制备
1.为使钇、钪或镧系元素的复合氧化物（分别为Y-Ba-Cu-O、Sc-Ba-Cu-O和Ln-Ba-CU-O）于焙烧之后具有钙钛矿结构，基本的实施方法是将每种氧化物，即Y2O3、Sc2O3以及Ln2O3分别与碳酸钡（BaCO3）和氧化铜（CuO）粉末相混合。更具体讲，是将这三种元素（即离子半径和化学性质都很相似的钇、钪以及镧 元素）中的每一种，分别与钡和铜以1∶2∶3的原子比进行混合，然后按下法焙烧。（Ln表示镧系元素）
2.将制成的粉末于普通的粉碎混合设备中进行混合和粉碎，以形成粒径约1微米或更小的均质混合粉末。将此混合粉末于大气中在约1100-1200°K初步焙烧约10小时。将初步焙烧的物料再粉碎，得到粒径为约1微米或更小的经初步焙烧粉末。然后将此经初步焙烧的粉末进行再焙烧，得到一种高温超导体，所制产物的形式为（1）粉末，（2）压制成的固体产物，（3）在基底上的薄膜，（4）填充于空管中的超导性材料等等。所用焙烧条件取决于所制超导体的构型和尺寸。但一般情况下，例如于1200-1400°K在空气中进行。
Ⅱ）用辐射线处理
为使上述经焙烧的物料具有呈现超导特性所需的结构，亦即成为一种超导性物相，而将该经焙烧物料置于氦气气氛中，于室温至约600°K的温度范围，应用一种辐射线进姓丈洹５笔褂么绾傻牧Ｗ邮保室说姆浼亮糠段?010-1021/厘米2，当使用不带电荷的粒子束时，为1015-1018/厘米2。若剂量超出上述范围的上限时，其超导性物相则消失。
以下所述的实验可证实本发明的优越性。
将测电阻用的导线接到母体上，于辐射线照射器中，在室温至20°K的冷却过程中，长时间连续测量上述母体在照射之前和照射之后的电阻，以检测照射之前和之后电阻随温度的变化，从而得到图1和图2所示的结果。在这些图中，横轴表示绝对温度K，纵轴表示电阻值（Ω）。图线所示的是本发明的实例之一，即一种具有钙钛矿结构的镧系元素-钡-铜-氧复合氧化物，在中子辐射线（例如中子束照射之前和之后，其电阻随温度变化的关系。图1所示的是用较小辐射剂量照射所得结果，而图2所示是用比图1更大的辐射剂量照射所得结果。从这些图可以清楚地了解到，在如箭头所示的冷却过程中，该物质的电阻变化，并且经过用一种辐射线照射过的该物质能够在液氮温度至室温的温度范围内稳定地呈现出超导性质。还应指出，表1和表2分别示出对图1和图2所示实验中的母体所用辐射线照射的条件。
Claims (1)
1、一种超导体的制造方法，所述的超导体在液氮温度至室温的温度范围内能够呈现稳定的超导性质，本方法包括将具有钙钛矿结构的钇、钪或镧系元素的复合氧化物用一种能导致原子位移的辐射线进行照射，亦即应用一种带电荷的粒子束，例如电子束、质子束、重离子束等等，或是一种不带电荷的粒子束，例如中子束进行照射。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP269000/87 | 1987-10-24 | ||
| JP62269000A JPH01111702A (ja) | 1987-10-24 | 1987-10-24 | 複合酸化物から放射線照射を利用して室温超伝導体を製造する方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1033122A true CN1033122A (zh) | 1989-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN88107397.0A Pending CN1033122A (zh) | 1987-10-24 | 1988-10-22 | 应用辐射线照射由复合氧化物制备常温超导体的方法 |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPH01111702A (zh) |
| CN (1) | CN1033122A (zh) |
| DE (1) | DE3835989A1 (zh) |
| FR (1) | FR2622357A1 (zh) |
| GB (1) | GB2211497A (zh) |
| IT (1) | IT1224497B (zh) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5093310A (en) * | 1991-01-30 | 1992-03-03 | Gec-Marconi Electronic Systems Corp. | Method of enhancing the upper critical field (HC2) in high temperature superconducting ceramic copper oxide perovskites |
| DE4119707A1 (de) * | 1991-06-14 | 1992-12-17 | Siemens Ag | Verfahren zum herstellen eines hochtemperatur-supraleitenden bauteiles und hochtemperatur-supraleitendes bauteil |
| US6465739B1 (en) * | 1993-12-21 | 2002-10-15 | Finch International Limited | Very high temperature and atmospheric pressure superconducting compositions and methods of making and using same |
| JPH0891837A (ja) * | 1994-09-16 | 1996-04-09 | Kokusai Chodendo Sangyo Gijutsu Kenkyu Center | 酸化物超電導体およびその製造方法 |
| DE10007915A1 (de) * | 2000-02-21 | 2001-09-13 | Alcatel High Temperature Super | Verfahren zur Herstellung eines niedrigohmigen Materials, niedrigohmiges Material, Supraleiter, supraleitendes Bauteil, Vorrichtung und Anlage mit einem niedrigohmigen Material sowie deren Verwendung |
| US6898970B2 (en) | 2003-06-05 | 2005-05-31 | International Business Machines Corporation | Inertial navigation device for ion propulsion driven spacecraft |
| US6799462B1 (en) | 2003-06-05 | 2004-10-05 | International Business Machines Corporation | Gravimetric measurement method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3346425A (en) * | 1964-04-01 | 1967-10-10 | Gen Electric | Superconductors |
| EP0286106B1 (en) * | 1987-04-08 | 1995-08-02 | Hitachi, Ltd. | Process for manufacturing a superconductive device |
| CA1328242C (en) * | 1987-05-18 | 1994-04-05 | Nobuhiko Fujita | Process for manufacturing a superconductor and a method for producing a superconducting circuit |
| JPS6461373A (en) * | 1987-08-28 | 1989-03-08 | Matsushita Electric Ind Co Ltd | Production of superconductor |
| JPS6487516A (en) * | 1987-09-29 | 1989-03-31 | Matsushita Electric Ind Co Ltd | Production of thin film superconductor |
-
1987
- 1987-10-24 JP JP62269000A patent/JPH01111702A/ja active Pending
-
1988
- 1988-10-18 IT IT67931/88A patent/IT1224497B/it active
- 1988-10-19 GB GB8824505A patent/GB2211497A/en not_active Withdrawn
- 1988-10-21 DE DE3835989A patent/DE3835989A1/de not_active Withdrawn
- 1988-10-21 FR FR8813854A patent/FR2622357A1/fr active Pending
- 1988-10-22 CN CN88107397.0A patent/CN1033122A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| IT1224497B (it) | 1990-10-04 |
| GB2211497A (en) | 1989-07-05 |
| FR2622357A1 (fr) | 1989-04-28 |
| JPH01111702A (ja) | 1989-04-28 |
| DE3835989A1 (de) | 1989-05-03 |
| GB8824505D0 (en) | 1988-11-23 |
| IT8867931A0 (it) | 1988-10-18 |
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