Magnetic Relaxation of (La1-xSrx)(2)CuO4 Single Crystals with Various Sr Composition

被引:0
|
作者
Kobayashi, T. [1 ]
Kimura, T. [1 ]
Shimoyama, J. [1 ]
Kishio, K. [1 ]
Kitazawa, K. [1 ]
Yamafuji, K. [1 ,2 ]
机构
[1] Univ Tokyo, Dept Ind Chem, Bunkyo Ku, Tokyo 113, Japan
[2] Kyushu Univ, Dept Elect, Higashi Ku, Fukuoka 812, Japan
关键词
D O I
10.1016/0921-4534(94)90988-1
中图分类号
O59 [应用物理学];
学科分类号
摘要
The magnetization curves of (La1-xSrx)(2)CuO4 single crystals a. re classified into two types. In the under-doped region (x < 0.075), magnetization dccrcases with power of the time, M(t) = M(0)t(-alpha). The current depended pinning potential, U = U0In(J(c)/J), explains this behavior. In the over-doped region (x >= 0.075), relaxation rate increases for increasing field and temperature at first. But there is a bump on B-T plane, whose position corresponds to the second peak.
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页码:2923 / 2924
页数:2
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