Flux pinning in HgBa2Ca2Cu3O8+x single crystals

被引:6
|
作者
Wisniewski, A
Szymczak, R
Baran, M
Puzniak, R
Karpinski, J
Molinski, R
Schwer, H
Conder, K
Meijer, I
机构
[1] ETH ZURICH, FESTKORPERPHYS LAB, CH-8093 ZURICH, SWITZERLAND
[2] POLISH ACAD SCI, HIGH PRESSURE RES CTR, PL-01142 WARSAW, POLAND
关键词
D O I
10.1007/BF02562939
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Single crystals of HgBa2Ca2Cu3O8+x, with T-c onset = 120 K, were grown using a gas high pressure system. Magnetization studies were performed in a wide range of temperature and in magnetic fields up to 5 T using a dc SQUID magnetometer. The irreversibility line was determined from the magnetization measurements. On a log(H-irr) versus log(1 - T-irr/T-c) plot the irreversibility line shows two slopes. At higher temperatures the irreversibility line has rather three-dimensional character, whereas at lower temperatures the irreversibility line exhibits two-dimensional character.
引用
收藏
页码:1649 / 1650
页数:2
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