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Ba_0.1Y_0.9CuO₃的高温超导电性

HIGH T_c SUPERCONDUCTIVITY OF （Ba,Y）CuO₃

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【作者】张其瑞；钱逸泰；陈祖耀；管惟炎；赵勇；张酣；夏健生；潘国强；曹烈兆；陈兆甲；阮跃钟；周贵恩；张民健；喻道奇；何振辉；杨治平；

【Author】 Zhang Qirui,Qian Yitai,Chen Zuyao,Guan Weiyan, Zhao Yong,Zhang Han,Xia Jiansheng,Pan Guoqiang,Cao Liezhao,Chen Zhao-jia, Ruan Yaozhong, Zhou Guien,Zhang Mingjian,Yu Daoqi,HeZhenghui,Yang Zhiping(Physics Department,University of Science & Technology of Chian)(Applied Chemistry Department,USAC) (Center of Stiictural & Compositional Analysis,USTC)

【机构】中国科学技术大学物理系；中国科学技术大学应用化学系；中国科学技术大学结构成份分析中心；中国科学技术大学应用化学系；

【摘要】用电阻法测量Ba_0.1Y_0.9CuO₃的电阻温度关系,在130K附近,其R（T）明显偏离线性。超导转变中点温度达90K,整个转变过程中电阻下降大于四个数量级。更多还原

【Abstract】 Occurrence of high Tc superconductivity with Tc=90K was observed in(Ba,Y)CuO2 by resistance maesurement. The temperature dependence of resistivity deviates violently from linearity at 130K. The superconducting transition temperature Tc with zero resistivity is 68K, Tc(mid) = 90K, △Tc=4K. The resistance drops down larger than four ordres of magnitude during the superconducting-normal transition. The results above were reproducible after several heatcycles from 4.2 to 300 and/or have been store in liquid nitrogen for one week.更多还原