INPLANE ANISOTROPY OF THE INTERACTION BETWEEN VORTEX AND TWIN BOUNDARY IN YBA2CU3O7 SINGLE-CRYSTALS

被引:56
作者
LIU, JZ [1 ]
JIA, YX [1 ]
SHELTON, RN [1 ]
FLUSS, MJ [1 ]
机构
[1] UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DEPT CHEM & MAT SCI,DIV CONDENSED MATTER & ANALYT SCI,LIVERMORE,CA 94550
关键词
D O I
10.1103/PhysRevLett.66.1354
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We report the temperature dependence of the magnetization hysteresis loops of high-quality YBa2Cu3O7 single crystals, each with a single unique orientation of twin boundaries. We have observed magnetization anisotropy in the temperature range 6-77 K for various magnetic fields applied normal to the c axis and parallel (stronger pinning) or perpendicular (weaker pinning) to the twin-boundary orientation, thus causing an anisotropic critical current density J(c). Magnetization-time-relaxation and Meissner-fraction measurements also support the above observation.
引用
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页码:1354 / 1357
页数:4
相关论文
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