利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

165 条记录 (耗时 0.032 秒)

    High temperature oxide superconductor
    2.
    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。

    Oxide superconductors and method for producing same
    3.
    发明授权
    Oxide superconductors and method for producing same 失效
    氧化物超导体及其制造方法

    公开(公告)号：US5217945A

    公开(公告)日：1993-06-08

    申请号：US754996

    申请日：1991-09-05

    申请人： Takahiro Wada ,  Yuji Yaegashi ,  Ataru Ichinose ,  Nobuo Suzuki ,  Hisao Yamauchi ,  Shoji Tanaka

    发明人： Takahiro Wada ,  Yuji Yaegashi ,  Ataru Ichinose ,  Nobuo Suzuki ,  Hisao Yamauchi ,  Shoji Tanaka

    IPC分类号： C04B35/00 ,  C01G1/00 ,  C01G3/00 ,  C04B35/45 ,  H01B12/00 ,  H01B13/00 ,  H01L39/24

    CPC分类号： C04B35/4504 ,  H01L39/2419 ,  Y10S505/779 ,  Y10S505/78

    摘要： The present invention provides an oxide superconductor which has a relatively high transition temperature T.sub.c. This superconductor has the chemical formula (R.sub.1-x Ca.sub.x)(Ba.sub.1-y Sr.sub.y).sub.2 Cu.sub.3 O.sub.7-z wherein R is at least one rare earth element selected from the group consisting of Tm, Yb and Lu, x is with in the range of 0.1.ltoreq..times.0.5, y is within the range of 0.1.ltoreq. y .ltoreq.0.4 and z is within the range of 0.05 .ltoreq. z .ltoreq.(x/2+0.5). The invention further provides a method for producing the oxide superconductor which comprises firing a composition of the formula (R.sub.1-x Ca.sub.x)(Ba.sub.1-y Sr.sub.y).sub.2 Cu.sub.3 O.sub.7-z wherein R is at least one rare earth element selected from the group consisting of Tm, Yb and Lu, x is within the range of 0.1 .ltoreq..times..ltoreq.0.5 and y is within the range of 0.1 .ltoreq.y .ltoreq.0.4 at a temperature of from 750.degree. C. to the melting temperature of the composition under an oxygen partial pressure P(O.sub.2) of 0.001 atm .ltoreq.P(O.sub.2) .ltoreq.0.2 atm and then heat treating the composition to adjust the oxygen loss z to 0.05 .ltoreq.z .ltoreq.(x/2+0.5).

    N-type oxide superconductor represented by the formula (Nd.sub.x (Ce.sub.y L.sub.z).sub.2 CuO.sub.4-d where L is La, Mg or a mixture of alakaline earth elements
    6.
    发明授权
    N-type oxide superconductor represented by the formula (Nd.sub.x (Ce.sub.y L.sub.z).sub.2 CuO.sub.4-d where L is La, Mg or a mixture of alakaline earth elements 失效
    由式（Ndx（CeyLz）2CuO4-d表示的N型氧化物超导体，其中L是La，Mg或碱土金属元素的混合物

    公开(公告)号：US5244871A

    公开(公告)日：1993-09-14

    申请号：US772123

    申请日：1991-10-09

    申请人： Takeshi Sakurai ,  Toru Yamashita ,  Hisao Yamauchi ,  Shoji Tanaka

    发明人： Takeshi Sakurai ,  Toru Yamashita ,  Hisao Yamauchi ,  Shoji Tanaka

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

    CPC分类号： C01G3/006 ,  C04B35/4504 ,  H01L39/126 ,  Y10S505/775 ,  Y10S505/779 ,  Y10S505/80 ,  Y10S505/801 ,  Y10S505/809 ,  Y10S505/81

    摘要： An oxide superconductor comprises a composition represented by the composition formula: (Nd.sub.x --Ce.sub.y --L.sub.z).sub.2 CuO.sub.4-d (wherein L is an element selected from Ca and Mg, and x+y+z=1). The compositions of Nd, Ce and L of the oxide superconductor corresponds to a point falling inside an area of Nd--Ce--L ternary diagram surrounded by straight lines (A-B), (B-C), (C-D) and (D-A) connecting point (A) with point (B), point (B) with point (C), point (C) with point (D) and point (D) with point (A), respectively, the points (A), (B), (C) and (D) being points (x=1, y=0, z=0), (x=0.4, y=0.6, z=0), (x=0.4, y=0.3, z=0.3) and (x=0.1, y=0, z=0.9), respectively, in the Nd--Ce--L ternary diagram. Above-described Nd--Ce--L--Cu--O oxides can exhibit superconductivity within a wide range of composition when heat-treated in an atmosphere of nitrogen.

    摘要翻译： 氧化物超导体包括由组成式（Nd x -Cey-Lz）2 CuO 4 -d（其中L是选自Ca和Mg，x + y + z = 1的元素）表示的组合物。 氧化物超导体的Nd，Ce和L的组成对应于由直线（AB），（BC），（CD）和（DA）连接点包围的Nd-Ce-L三元图形区域内的点 （A），（B），（B），点（B），点（C），点（C）和点（D）和点（D） （x = 0.4，y = 0.6，z = 0），（x = 0.4，y = 0.3，z = 0.3）（C）和（D） 和Nd-Ce-L三元图中的（x = 0.1，y = 0，z = 0.9）。 当在氮气气氛中进行热处理时，上述Nd-Ce-L-Cu-O氧化物可在宽范围的组成范围内表现出超导性。

    High temperature superconductor Josephson junction element and manufacturing method for the same
    9.
    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
    10.
    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。