The Re-doped high Tc superconductor HgBa2Ca2Cu3Ox:: Magnetic irreversibility versus anisotropy

被引：6

作者：

Fàbrega, L ^{[1
]}

Martínez, B ^{[1
]}

Fontcuberta, J ^{[1
]}

Sin, A ^{[1
]}

Piñol, S ^{[1
]}

Obradors, X ^{[1
]}

机构：

[1] CSIC, Inst Ciencia Mat, Bellaterra 08193, Spain

来源：

JOURNAL OF APPLIED PHYSICS | 1998年 / 83卷 / 11期

关键词：

D O I：

10.1063/1.367768

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on magnetization measurements on grain-aligned Re-doped Hg-1223 superconductor (T-c approximate to 133 K). We analyze the anisotropic magnetic hysteresis M-irr as a function of temperature and magnetic field, and determine the irreversibility line H-irr(T) for magnetic fields applied parallel and perpendicular to the c axis of the structure. The similar values of both M-irr and H-irr(T) along the two main crystallographic directions reveal a marked decrease of the superconducting anisotropy, due to the Re substitution. This anisotropy reduction might be at the origin of the rise of the magnetic irreversibility already reported in these compounds, as compared to those without Re. (C) 1998 American Institute of Physics.

引用

页码：7309 / 7311

页数：3

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