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    Superconductive composite materials
    13.
    发明授权
    Superconductive composite materials 失效
    超导复合材料

    公开(公告)号：US5920246A

    公开(公告)日：1999-07-06

    申请号：US825700

    申请日：1997-03-19

    申请人： Ken Nagashima ,  Naomichi Sakai ,  Sang-Im Yoo ,  Hiroyuki Fujimoto ,  Masato Murakami

    发明人： Ken Nagashima ,  Naomichi Sakai ,  Sang-Im Yoo ,  Hiroyuki Fujimoto ,  Masato Murakami

    IPC分类号： C01G1/00 ,  C01G3/00 ,  H01B12/00 ,  H01B13/00 ,  H01L39/00 ,  H01L39/14 ,  H01F1/00

    CPC分类号： H01L39/143 ,  Y10S505/776

    摘要： A composite material having a plurality of sections integrated into a unitary structure and each including a bulk of a superconductive metal oxide of RE--Ba--Cu--O wherein RE represents a rare earth element, the bulk of each of the sections having pinning centers and capable of trapping a magnetic field. A first one of the sections has a superconductive current density different from that of a second one of the sections. The composite material may be produced by assembling preformed respective sections into a unitary structure or by immersing one of the sections in a solution to grow crystal of Y--Ba--Cu--O superconductive on that section, followed by trimming.

    摘要翻译： 一种复合材料，其具有整合成单一结构的多个部分，并且每个部分包括大部分RE-Ba-Cu-O的超导金属氧化物，其中RE表示稀土元素，每个部分的主体具有钉扎中心和 能够捕获磁场。 这些部分中的第一部分具有与第二部分的超导电流密度不同的超导电流密度。 复合材料可以通过将预成形的各个部分组装成单一结构或将其中一个部分浸入溶液中来生产，以在该部分上生长Y-Ba-Cu-O超导的晶体，然后进行修整。

    Superconductor and method of producing same
    14.
    发明授权
    Superconductor and method of producing same 失效
    超导体及其制造方法

    公开(公告)号：US5525584A

    公开(公告)日：1996-06-11

    申请号：US452138

    申请日：1995-05-26

    申请人： Masato Murakami ,  Sang-Im Yoo ,  Naomichi Sakai ,  Hiroshi Takaichi ,  Takamitsu Higuchi ,  Shoji Tanaka

    发明人： Masato Murakami ,  Sang-Im Yoo ,  Naomichi Sakai ,  Hiroshi Takaichi ,  Takamitsu Higuchi ,  Shoji Tanaka

    IPC分类号： H01L39/12 ,  H01B12/00

    CPC分类号： H01L39/126 ,  Y10S505/742 ,  Y10S505/778 ,  Y10S505/779 ,  Y10S505/785

    摘要： A high critical temperature and high critical current density superconductor is disclosed which contains a metal oxide expressed by the following formula (I):(R.sup.1.sub.1-x,Ba.sub.x)Ba.sub.2 Cu.sub.3 O.sub.d (I)wherein R.sup.1 stands for at least one element selected from the group consisting of La, Nd, Sm, Eu and Gd, x is a number greater than 0 but not greater than 0.5 and d is a number between 6.2 and 7.2. Fine phases of RE211, RE422 and/or a metal oxide expressed by the formula (R.sup.2.sub.1-z, Ba.sub.z) (Ba.sub.1-y, R.sup.2.sub.y).sub.2 Cu.sub.3 O.sub.p (R.sup.2 =La, Nd, Sm, Eu or Gd) may be dispersed in a matrix of the matrix phase of the formula (I). The above superconductor may be obtained by cooling a melt having a temperature of 1,000.degree.-1,300.degree. C. and containing R.sup.1, Ba, Cu and O at a cooling rate of 5.degree. C./hour or less under a partial pressure of oxygen of between 0.00001 and 0.05 atm, followed by annealing at 250.degree.-600.degree. C. in an oxygen atmosphere.

    摘要翻译： 公开了一种高临界温度和高临界电流密度超导体，其包含由下式（I）表示的金属氧化物：（R11-x，Bax）Ba2Cu3Od（I）其中R1代表选自以下的至少一种元素： 的La，Nd，Sm，Eu和Gd，x是大于0但不大于0.5的数，d是6.2和7.2之间的数。 RE211，RE422和/或由式（R21-z，Baz）（Ba1-y，R2y）2Cu3Op（R2 = La，Nd，Sm，Eu或Gd）表示的金属氧化物的细相可以分散在基质 的式（I）的基质相。 上述超导体可以通过在5℃/小时以下的冷却速度下，在温度为1000〜-1300℃的温度下冷却含有R 1，Ba，Cu和O的熔体， 在0.00001和0.05atm之间，然后在氧气氛中在250-600℃退火。