A study of the memory effect in ultra-pure YBa2Cu3O6.993

被引：0
作者：
Luo, H [1 ]
Wu, XF
Shi, J
Ding, SY
机构：
[1] Nanjing Univ, Dept Phys, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
[2] Wuhan Univ, Dept Phys, Wuhan 430072, Peoples R China
来源：
SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2002年 / 15卷 / 06期
关键词：
D O I：
10.1088/0953-2048/15/6/314
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Measurement of ac susceptibility (ACS) was performed for an ultra-pure YBa2Cu3O6.993 crystal by cycling temperature (T) wan-ning-up and cooling-down at several dc and ac fields in relative high frequency of 100 kHz. Strong history dependence was observed in these experimental ac susceptibility curves. To explain the experimental result. two distinct weakly pinned states of flux lattice (i.e. one ordered and the other disordered) are proposed on the basis of the phenomenological model. On the basis of this model we can qualitatively explain the experimental results.
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页码：917 / 922
页数：6
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