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1. 发明授权

US5098868A Vanadium-based superconducting metallic oxides 失效
标题翻译：基于VANADIUM的超导金属氧化物
公开(公告)号：US5098868A
公开(公告)日：1992-03-24
申请号：US590916
申请日：1990-10-01
申请人： Kai W. Wong , Wai-Yim Ching , Peter C. W. Fung , Fui T. Chan , Zhengzhi Sheng
发明人： Kai W. Wong , Wai-Yim Ching , Peter C. W. Fung , Fui T. Chan , Zhengzhi Sheng
IPC分类号： C01G1/00 , C01G31/00 , C04B35/45 , H01B12/00 , H01L39/12
CPC分类号： C01G31/006 , C04B35/4521 , C04B35/4525 , H01L39/126 , C01P2002/50 , C01P2002/72 , C01P2002/77 , C01P2006/40 , C01P2006/42 , Y10S505/775 , Y10S505/776 , Y10S505/782
摘要： Vanadium-containing superconducting oxides are disclosed having critical temperature (T.sub.c) values of above about 100.degree. K. and preferably about 110.degree.-150.degree. K., together with predicted current density (J.sub.c) values on the order of 10.sup.4 -10.sup.5 amperes/cm.sup.2. The oxides hereof are moreover relatively ductile and easily bulk sintered to give end products having desirable superconductivity characteristics. Certain preferred oxides of the invention are defined by the general formula:(V.sub.1-x M.sub.x).sub.i (A.sub.1-y M.sub.y).sub.j Q.sub.k Cu.sub.m O.sub.r.+-.t I.where M is selected from the group consisting of bismuth, lead and antimony, A is selected from the group consisting of calcium, sodium and potassium, Q is different than A and is selected from the group consisting of strontium, barium and calcium, x and t are individual numbers each respectively ranging from 0 to less than 1, i is either 2 or 3, j is either 0, 1 or 2, k is 2 or 3, m is either 1, 2 or 3, and r is an integer. Other preferred oxides are defined by the formulaBi.sub.2-p-q V.sub.p Pb.sub.q Sr.sub.2 Ca.sub.2 Cu.sub.3 O.sub.10.+-.t II.where p and q independently range up to about 0.7 and t is from 0 to less than l.
摘要翻译：公开了含有高于约100°K，优选约110°-150°K的临界温度（Tc）值的钒含量超导氧化物，以及预计的电流密度（Jc）值约为104-105安培/ cm2。此外，其氧化物相对延性并容易地体积烧结，以产生具有期望的超导特性的最终产品。本发明的某些优选的氧化物由通式（V1-xMx）i（A1-yMy）jQkCumOr +/- t I定义。其中M选自铋，铅和锑，A选自由钙，钠和钾组成的组，Q不同于A，选自锶，钡和钙，x和t各自分别为0至小于1，i为2或3 j为0,1或2，k为2或3，m为1,2或3，r为整数。其它优选的氧化物由式Bi2-p-qVpPbqSr2Ca2Cu3O10 +/- t II定义。其中p和q独立地为约0.7，t为0至小于1。

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