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在SrTiO3, NdGaO3衬底上生长的HgBa2CaCu2Oy超导薄膜

Y.F.Sun,J.D.Guo,X.L.Xu,Y.Z.Wang,G.C.Xiong

CHINESE JOURNAL OF LOW TEMPERATURE PHYSICS（1999）

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Abstract
通过两步法,在SrTiO3, NdGaO3衬底上制备了HgBa2CaCu2Oy 高温超导薄膜,X射线衍射实验结果证明了薄膜是c-轴外延生长的.电阻温度测量表明薄膜的超导零电阻转变温度(Tc)>115K和临界电流Jc>0.4MA/cm2(77K,零磁场),而且重复性很好.扫描电镜实验揭示了薄膜是层状生长的,晶粒是四方形和八角形的,实验证实基于碳酸盐的靶也是适合于制备汞系铜氧化物高温超导膜的.
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