DYNAMIC MEASUREMENTS OF FLUX CREEP AND FLOW IN YBA2CU3O7-DELTA SINGLE-CRYSTALS

被引:14
作者
POZEK, M [1 ]
UKRAINCZYK, I [1 ]
RAKVIN, B [1 ]
DULCIC, A [1 ]
机构
[1] UNIV ZAGREB, FAC NAT SCI & MATH, DEPT PHYS, YU-41001 ZAGREB, CROATIA
来源
EUROPHYSICS LETTERS | 1991年 / 16卷 / 07期
关键词
D O I
10.1209/0295-5075/16/7/013
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Decay of magnetization was measured in YBa2Cu307-delta single crystals under the conditions of field sweep. In varying the sweep rate over eight orders of magnitude, the system could be carried from flux creep to flux flow regime. A broad crossover is observed in agreement with a distribution in pinning potentials. This novel technique enabled the first experimental determination of the relaxation time in the flux creep regime (tau approximately 10(-3) s).
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页码:683 / 688
页数:6
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