THE 1ST MAGNETIC PENETRATION FIELD IN BSCCO SINGLE-CRYSTALS, TEMPERATURE-DEPENDENCE AND ELECTRON-IRRADIATION EFFECT

被引：20

作者：

CHIKUMOTO, N ^{[1
]}

KONCZYKOWSKI, M ^{[1
]}

MOTOHIRA, N ^{[1
]}

KISHIO, K ^{[1
]}

KITAZAWA, K ^{[1
]}

机构：

[1] UNIV TOKYO,DEPT IND CHEM,BUNKYO KU,TOKYO 113,JAPAN

来源：

PHYSICA C | 1991年 / 185卷 / pt 3期

关键词：

Barium Compounds - Calcium Compounds - Copper Oxides - Crystals - Magnetic Properties - Strontium Compounds;

D O I：

10.1016/0921-4534(91)91043-4

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report measurements of the first magnetic penetration field, Hp, of Bi2.2Sr1.8CaCu2O8+partial derivative crystals by a novel local Hall probe technique. We demonstrate that H(p) is slightly enhanced above the thermodynamic lower critical field, H(c1), by the Bean-Livingston surface barrier, and that irreversible magnetization at temperatures between 50K and T(c) (87.8K) arises mainly from the presence of this barrier. We argue that the non-linear temperature variation of H(p) observed, results from a temperature-dependent efficiency of the Bean-Livingston barrier.

引用

页码：1835 / 1836

页数：2