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    High temperature oxide superconductor
    4.
    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 superconductor and method of producing same
    5.
    发明授权
    Oxide superconductor and method of producing same 失效
    氧化物超导体及其制造方法

    公开(公告)号：US5670457A

    公开(公告)日：1997-09-23

    申请号：US356640

    申请日：1994-12-15

    申请人： Seiji Adachi ,  Changqin Jin ,  Xiao-Jing Wu ,  Hisao Yamauchi ,  Shoji Tanaka

    发明人： Seiji Adachi ,  Changqin Jin ,  Xiao-Jing Wu ,  Hisao Yamauchi ,  Shoji Tanaka

    IPC分类号： C01G1/00 ,  C01G3/00 ,  H01B12/00 ,  H01B13/00 ,  H01L39/12 ,  C04B35/01 ,  C04B35/03

    CPC分类号： H01L39/126 ,  Y10S505/776 ,  Y10S505/778

    摘要： An oxide superconductor composed of Cu, O and at least one of Ba, Sr and Ca and including alternately arranged at least one oxygen-deficient perovskite structure section and at least one infinite layer structure section, wherein the perovskite structure section consists of two first atomic layers and a second atomic layer sandwiched between the first layers, and wherein the infinite layer structure section consists of alternately arranged, third and fourth atomic layers. Each of the first layers consists of O and an element M.sup.1 selected from Ba, Sr and Ca and has an atomic ratio O/M.sup.1 of 1 or less, while the second layer consists of O and Cu and has an atomic ratio O/Cu of 2 or less. Each of the third layers consists of O and Cu and has an atomic ratio O/Cu of 2, while each of the fourth layers consists of an element M.sup.2 selected from Ba, Sr and Ca. A superconductor having a superconducting critical temperature of over 100 K. may be produced by heat treatment at 800.degree.-1,200.degree.C. under a super-high pressure of 20,000-80,000 atm.

    摘要翻译： 由Cu，O和Ba，Sr和Ca中的至少一种构成的氧化物超导体，包括交替排列至少一个缺氧钙钛矿结构部分和至少一个无限层结构部分，其中钙钛矿结构部分由两个第一原子 层和夹在第一层之间的第二原子层，并且其中无限层结构部分由交替排列的第三和第四原子层组成。 每个第一层由O和选自Ba，Sr和Ca的元素M1组成，并且具有1或更小的原子比O / M1，而第二层由O和Cu组成，并且原子比O / Cu为 2以下。 每个第三层由O和Cu组成，并且原子比O / Cu为2，而每个第四层由选自Ba，Sr和Ca的元素M2组成。 具有超导临界温度超过100K的超导体可以通过在20000-80,000大气压的超高压下在800-1200℃下进行热处理来制备。

    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
    7.
    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。

    Oxide superconductor
    10.
    发明授权
    Oxide superconductor 失效
    氧化物超导体

    公开(公告)号：US5674815A

    公开(公告)日：1997-10-07

    申请号：US611974

    申请日：1996-03-06

    申请人： Seiji Adachi ,  Hisao Yamauchi ,  Shoji Tanaka ,  Nobuo Mouri

    发明人： Seiji Adachi ,  Hisao Yamauchi ,  Shoji Tanaka ,  Nobuo Mouri

    IPC分类号： C01G1/00 ,  C01G3/00 ,  H01B12/00 ,  H01L39/02 ,  H01L39/12 ,  H01B12/02 ,  C04B35/45

    CPC分类号： H01L39/126 ,  Y10S505/785

    摘要： An oxide superconductor composed of Cu, O and M (M is Ba, Sr and/or Ca) and including alternately arranged at least one rock-salt structure section and at least one infinite layer structure section, wherein the rock-salt structure section consists of two atomic layers each consisting of O and M and each having an atomic ratio O/M of 1 or less, and the infinite layer structure section consists of alternately arranged, first and second atomic layers. Each of the first atomic layers consists of O and Cu and has an atomic ratio O/Cu of 2, while each of the second atomic layers consists of the element M. The infinite layer structure section may consist of only one first atomic layer.

    摘要翻译： 由Cu，O和M（M是Ba，Sr和/或Ca）组成的氧化物超导体，并且包括交替地布置至少一个岩盐结构部分和至少一个无限层结构部分，其中岩盐结构部分组成 的两个原子层，每个由O和M组成，每个原子比的O / M为1或更小，无限层结构部分由交替排列的第一和第二原子层组成。 每个第一原子层由O和Cu组成，原子比O / Cu为2，而第二原子层由元素M组成。无限层结构部分可以仅由一个第一原子层组成。