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    High temperature oxide superconductor
    1.
    发明授权
    High temperature oxide superconductor 失效
    高温氧化物超导体

    公开(公告)号：US5468724A

    公开(公告)日：1995-11-21

    申请号：US68587

    申请日：1993-05-27

    申请人： Takahiro Wada ,  Shin-ichi Koriyama ,  Takeshi Sakurai ,  Nobuo Suzuki ,  Takayuki Miyatake ,  Hisao Yamauchi ,  Naoki Koshizuka ,  Shoji Tanaka

    发明人： Takahiro Wada ,  Shin-ichi Koriyama ,  Takeshi Sakurai ,  Nobuo Suzuki ,  Takayuki Miyatake ,  Hisao Yamauchi ,  Naoki Koshizuka ,  Shoji Tanaka

    IPC分类号： C01G3/00 ,  C04B35/45 ,  H01L39/12 ,  H01B12/00

    CPC分类号： C01G3/006 ,  C04B35/4504 ,  H01L39/126 ,  C01P2002/72 ,  C01P2002/77 ,  C01P2002/88 ,  C01P2004/80 ,  C01P2006/14 ,  Y10S505/779 ,  Y10S505/78

    摘要： Disclosed herein are high-temperature oxide superconductors of RBa.sub.2 Cu.sub.4 O.sub.8 type, with Ba partly replaced by Sr or Ca, or with R and Ba partly replaced by Ca and Sr, respectively, as represented by the chemical composition formula of R(Ba.sub.1-y Sr.sub.y).sub.2 Cu.sub.4 O.sub.8 or R(Ba.sub.1-z Ca.sub.z).sub.2 Cu.sub.4 O.sub.8 or (R.sub.1-x Ca.sub.x) (Ba.sub.1-y Sr.sub.y).sub.2 Cu.sub.4 O.sub.8. They exhibit superconductivity at high temperatures. Especially, the last one exhibits superconductivity at a higher temperature than the former two. All of them can be made with a less amount of Ba as a deleterious substance, and the first two have improved sinterability. The best results are obtained when they are produced by the process involving the hot hydrostatic pressure treatment of the mixture of raw materials at 850.degree.-1100.degree. C. in an atmosphere composed of an inert gas and oxygen. The process permits a wider selection of Ba raw materials.

    摘要翻译： 本文公开了RBa2Cu4O8型的高温氧化物超导体，其中Ba部分被Sr或Ca取代，或者R和Ba分别被Ca和Sr部分替代，如R（Ba1-ySry）2Cu4O8的化学组成式所示 或R（Ba1-zCaz）2 Cu4O8或（R1-xCax）（Ba1-ySry）2Cu4O8。 它们在高温下表现出超导性。 特别地，最后一个在比前两个更高的温度下表现出超导性。 所有这些都可以用少量的Ba作为有害物质，前两种具有改善的烧结性。 通过在惰性气体和氧气组成的气氛中，在850〜-1100℃的原料混合物进行热静水压处理的方法制造时，得到最好的结果。 该过程允许更广泛地选择Ba原料。

    High temperature superconductor Josephson junction element and manufacturing method for the same
    4.
    发明授权
    High temperature superconductor Josephson junction element and manufacturing method for the same 失效
    高温超导体约瑟夫逊结元件及其制造方法相同

    公开(公告)号：US06541789B1

    公开(公告)日：2003-04-01

    申请号：US09385710

    申请日：1999-08-30

    申请人： Tetsuro Sato ,  Jian-Guo Wen ,  Naoki Koshizuka ,  Shoji Tanaka

    发明人： Tetsuro Sato ,  Jian-Guo Wen ,  Naoki Koshizuka ,  Shoji Tanaka

    IPC分类号： H01L3922

    CPC分类号： H01L39/2496 ,  H01L39/225

    摘要： In a method of manufacturing a Josephson junction, a first superconductive layer is formed on a substrate. An insulating film is formed on the first superconductive layer. The insulating film is etched to have an inclination portion. The first superconductive layer is etched using the etched insulating film as a mask, to have an inclination portion. A barrier layer is formed on a surface of the inclination portion of the first superconductive layer. A second superconductive layer is formed on the barrier layer and the inclination portion of the insulating layer.

    摘要翻译： 在制造约瑟夫逊结的方法中，在基板上形成第一超导层。 绝缘膜形成在第一超导层上。 绝缘膜被蚀刻以具有倾斜部分。 使用蚀刻绝缘膜作为掩模蚀刻第一超导层，以具有倾斜部分。 在第一超导层的倾斜部分的表面上形成阻挡层。 在隔离层和绝缘层的倾斜部分上形成第二超导层。

    Oxide superconductor multilayered film and oxide superconductor josephson device
    5.
    发明授权
    Oxide superconductor multilayered film and oxide superconductor josephson device 失效
    氧化物超导体多层膜和氧化物超导体约瑟夫森装置

    公开(公告)号：US6011981A

    公开(公告)日：2000-01-04

    申请号：US814172

    申请日：1997-03-10

    申请人： Gustavo Alvarez ,  Furen Wang ,  Jian-Guo Wen ,  Naoki Koshizuka ,  Youichi Enomoto ,  Tadashi Utagawa ,  Shoji Tanaka

    发明人： Gustavo Alvarez ,  Furen Wang ,  Jian-Guo Wen ,  Naoki Koshizuka ,  Youichi Enomoto ,  Tadashi Utagawa ,  Shoji Tanaka

    IPC分类号： H01L39/12 ,  H01L39/22

    CPC分类号： H01L39/128 ,  H01L39/225 ,  Y10S505/702

    摘要： An oxide superconducting multilayered thin film structure having a laminated layer structure of oxide superconductor thin film layers and non-superconductor thin film layers constituted by a combination of material groups for making strain free interfaces among both thin film layers. For example, an oxide superconductor multilayered film constituted by a laminated layer structure where thin films of an oxide superconductor represented by the chemical formula of M'Ba.sub.2 Cu.sub.3 O.sub.7-.delta. (M'; a rare earth element of Nd, Sm, Eu or the like or an alloy of these, .delta.; oxygen depletion amount) and thin films of an oxide represented by the chemical formula of M*Ba.sub.2 Cu.sub.3 O.sub.7-.delta. (M*; an element of Pr, Sc or the like or an alloy of these, .delta.; oxygen depletion amount) are alternately stacked. The oxide thin films are thin films fabricated by a pulsed laser deposition process or a sputtering process. A Josephson device can be provided by using the multilayered film.

    摘要翻译： 一种氧化物超导多层薄膜结构，其具有由氧化物超导体薄膜层和非超导体薄膜层组成的层叠层结构，所述非超导薄膜层由两个薄膜层之间形成无应力界面的材料组合组成。 例如，由M'Ba2Cu3O7-δ（M'，Nd，Sm，Eu等的稀土元素表示的氧化物超导体的薄膜的层叠层结构构成的氧化物超导体多层膜， 这些的合金，δ;氧耗尽量）和由化学式M * Ba2Cu3O7-δ（M *; Pr，Sc等元素或它们的合金，δ;氧气）表示的氧化物薄膜 耗尽量）交替堆叠。 氧化物薄膜是通过脉冲激光沉积工艺或溅射工艺制造的薄膜。 可以通过使用多层膜来提供约瑟夫森装置。

    Production of oxide superconductors having large magnetic levitation force
    7.
    发明授权
    Production of oxide superconductors having large magnetic levitation force 失效
    生产具有较大磁悬浮力的氧化物超导体

    公开(公告)号：US5474976A

    公开(公告)日：1995-12-12

    申请号：US39561

    申请日：1993-03-29

    申请人： Akihiro Kondoh ,  Masato Murakami ,  Hiroshi Takaichi ,  Naoki Koshizuka ,  Shoji Tanaka ,  Shoichi Kagiya

    发明人： Akihiro Kondoh ,  Masato Murakami ,  Hiroshi Takaichi ,  Naoki Koshizuka ,  Shoji Tanaka ,  Shoichi Kagiya

    IPC分类号： C04B35/45 ,  C04B35/653 ,  H01L39/12 ,  H01L39/24

    CPC分类号： C04B35/653 ,  C04B35/4504 ,  H01L39/126 ,  H01L39/2483

    摘要： A method for producing an REBaCuO oxide superconductor having large magnetic levitation force, where RE is a rare earth element selected from the group consisting of Y, Sm, Eu, Gd, Dy, Ho, Er, and Yb, involves the steps of using a raw material mixture as the starting feed, heating the raw material mixture for partial melting, followed by cooling and solidification, pulverizing and mixing the resulting solid, shaping the resulting mixture into a given shape, placing or embedding nucleates on or in the resulting shape, followed by heating for partial melting, and cooling the resulting partial melt to a substantial temperature at which a superconducting phase starts to form, followed by slow cooling, whereby the superconducting phase is preferentially formed and grown from a nucleation site.

    摘要翻译： 制备具有大的磁悬浮力的REBaCuO氧化物超导体的方法，其中RE是选自Y，Sm，Eu，Gd，Dy，Ho，Er和Yb的稀土元素，包括使用 原料混合物作为起始原料，加热原料混合物进行部分熔融，然后冷却和固化，粉碎和混合所得固体，将所得混合物成形为给定形状，将成核体放置或嵌入所形成的形状， 然后加热部分熔融，并将所得部分熔体冷却至开始形成超导相的实质温度，然后缓慢冷却，由此优选从成核位点形成和生长超导相。

    Process for producing oxide superconductor
    8.
    发明授权
    Process for producing oxide superconductor 失效
    氧化物超导体的制造方法

    公开(公告)号：US5459124A

    公开(公告)日：1995-10-17

    申请号：US144947

    申请日：1993-10-29

    申请人： Terutsugu Oyama ,  Masato Murakami ,  Naoki Koshizuka ,  Shoji Tanaka

    发明人： Terutsugu Oyama ,  Masato Murakami ,  Naoki Koshizuka ,  Shoji Tanaka

    IPC分类号： C04B35/45 ,  C04B35/64 ,  C04B35/653 ,  H01L39/24 ,  C04B35/505

    CPC分类号： C04B35/4504 ,  C04B35/45 ,  C04B35/64 ,  C04B35/653 ,  H01L39/2419 ,  Y10S505/725

    摘要： A process for producing an oxide superconductor, comprising putting a formed body of raw material powders for forming an oxide superconductor on silver or silver oxide within a pan which does not melt at the melting point of silver, heating the pan to a temperature higher than the melting point of silver to bring the formed body to a semi-molten state with the formed body being floated on molten silver, cooling the pan and taking the formed body out of the re-solidified silver. This process enables a large bulk material having a diameter of 10 cm or more to be produced without occurrence of cracking.

    摘要翻译： 一种氧化物超导体的制造方法，其特征在于，将在所述锅内的银或氧化银上形成氧化物超导体的原料粉末的成形体放置在不在银熔点熔化的锅内，将所述锅加热至高于 银的熔点使成形体处于半熔融状态，其中成形体浮在熔融的银上，冷却盘并将成形体从重新凝固的银中取出。 该方法能够生产直径为10cm或更大的大体积材料而不发生开裂。

    Method of manufacturing an oxide superconductor wire
    10.
    发明授权
    Method of manufacturing an oxide superconductor wire 失效
    氧化物超导体线的制造方法

    公开(公告)号：US06226858B1

    公开(公告)日：2001-05-08

    申请号：US09088915

    申请日：1998-06-02

    申请人： Kaname Matsumoto ,  Naoki Koshizuka ,  Yasuzo Tanaka

    发明人： Kaname Matsumoto ,  Naoki Koshizuka ,  Yasuzo Tanaka

    IPC分类号： H01L3924

    CPC分类号： H01L39/2461 ,  Y10S505/701 ,  Y10S505/704 ,  Y10T29/49014

    摘要： A method of manufacturing a superconductor wire which comprises: rolling a polycrystalline metallic substrate; heating the rolled polycrystalline metallic substrate at a temperature of 900° C. or more in a non-oxidizing atmosphere, whereby obtaining a rolled textured structure which is oriented such that the [100] plane thereof is parallel with a rolled plane and the axis thereof is parallel with a rolled direction; heating the polycrystalline metallic substrate of the rolled textured structure at a temperature of 1,000° C. or more in an oxidizing atmosphere, whereby forming an oxide crystal layer consisting essentially of an oxide of the polycrystalline metal; and forming an oxide superconductor layer on the oxide crystal layer.

    摘要翻译： 一种制造超导线的方法，包括：滚动多晶金属基底; 在非氧化性气氛中在900℃以上的温度下加热轧制的多晶金属基材，由此获得轧制织构化结构，其取向为使其[100]面与轧制平面平行，并且<001 其轴线与轧制方向平行; 在氧化气氛中在1000℃以上的温度下加热轧制的织构结构的多晶金属基材，由此形成主要由多晶金属的氧化物组成的氧化物晶体层; 在氧化物晶层上形成氧化物超导体层。