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SUPERCONDUCTIVITY ABOVE LIQUID NITROGEN TEMPERATURE IN NEW OXIDE SYSTEMS
被引：6
作者：
赵忠贤
陈立泉
杨乾声
黄玉珍
陈赓华
唐汝明
刘贵荣
倪永明
崔长庚
陈烈
王连忠
郭树权
李山林
毕建清
王昌庆
机构：
[1] Instituse of Physics
[2] Beijing
[3] Academia Sinica
来源：
关键词：
Ba;
Cu;
SUPERCONDUCTIVITY ABOVE LIQUID NITROGEN TEMPERATURE IN NEW OXIDE SYSTEMS;
La;
D O I：
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学科分类号：
摘要：
An important discovery of the superconductivity in Ba-La-Cu-O system with transition temperature 30-35 K has been made by Bednorz and Miiller.After that extensive studies in searching for the new series of related superconducting compounds have been well stimu-lated. New systems with even higher transition temperatures have been found one after another. Bulk superconductivity was confirmed in the LaMCuOsystem with M=Ba, Sr, Ca and 0.1<x<0.3, and the transition temperature T’s were 40 K in single phase compounds and 48.6 K in multi-phase materials. An even higher value of T= 52 K has been reported under hydrostatic pressuret. More recently, superconductivity above 90 K has been claimed bv C. W. Ghu et al. and the superconductivity in Ba-Y-
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页码：1098 / 1102
页数：5
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