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中子辐照熔融织构YBa2Cu3Oy的临界电流
引用本文:卫崇德,刘尊孝,甘子钊,任洪涛,肖玲,贺庆.中子辐照熔融织构YBa2Cu3Oy的临界电流[J].物理学报,1992,41(11):1884-1890.
作者姓名:卫崇德  刘尊孝  甘子钊  任洪涛  肖玲  贺庆
作者单位:(1)北京大学物理系,北京100871; (2)北京有色金属研究总院,北京100088
摘    要:测量了中子辐照熔融织构YBa2Cu3Oy样品从1.5K到85K之间一系列温度下的磁化曲线。磁场H平行于c轴时,在6K观察到磁通跳跃。中子辐照可使临界电流提高一个数量级。分析了临界电流的各向异性,辐照增强与磁场的关系和主要的钉扎中心。讨论了磁通跳跃的物理模型。 关键词

关 键 词:YBCO  高温超导性  辐照  中子
收稿时间:1991-11-21

CRITICAL CURRENT DENSITY IN NEUTRON IRRADIATED BULK YBa2Cu3Oy
WEI CHONG-DE,LIU ZUN-XIAO,GAN ZI-ZHAO,REN HONG-TAO,XIAO LING and HE QING.CRITICAL CURRENT DENSITY IN NEUTRON IRRADIATED BULK YBa2Cu3Oy[J].Acta Physica Sinica,1992,41(11):1884-1890.
Authors:WEI CHONG-DE  LIU ZUN-XIAO  GAN ZI-ZHAO  REN HONG-TAO  XIAO LING and HE QING
Abstract:The magnetization curves of neutron irradiated bulk YBa2Cu3Oy prepared by melt-textured growth method were measured from 1.5 to 85 K. Flux jumps were observed for H∥c at 6K. The anisotropies of critical current are analysed in detail- The pinning mechanism and physical model for flux jumps are discussed.
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