摘要
测量了中子辐照熔融织构YBa_2Cu_3Oy样品从1.5 K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。
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.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
1992年第11期1884-1890,共7页
Acta Physica Sinica
