LOWER CRITICAL FIELDS, CRITICAL CURRENTS AND FLUX CREEP IN PB2SR2RE1-XCAXCU3O8+Y (RE=Y, DY) SINGLE-CRYSTALS

被引：1

作者：

METLUSHKO, V

GUNTHERODT, G

MOSHCHALKOV, VV

BRUYNSERAEDE, Y

LUKINA, MM

机构：

[1] KATHOLIEKE UNIV LEUVEN,VASTE STOF FYS MAGNETISME LAB,B-3001 LOUVAIN,BELGIUM

[2] MOSCOW MV LOMONOSOV STATE UNIV,DEPT PHYS,MOSCOW 117234,RUSSIA

来源：

APPLIED SUPERCONDUCTIVITY | 1993年 / 1卷 / 3-6期

关键词：

D O I：

10.1016/0964-1807(93)90238-W

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Lower critical field H(C1)(T), temperature and field dependences of critical current j(C)(T,H) and the normalized relaxation rate d(1nM)/d(1nt) are studied on Pb2Sr2RE1-xCaxCu3O8+y (RE=Y, Dy) single crystals. The analysis j(C)(T,H), the temperature and field dependences of d(1nM)/d(1nt) and the H(C1)(T) data shows that a continuous decoupling of the pancake-like vortices takes place with increasing temperature or magnetic field, leading to a cross-over from individual to collective pinning of the vortex lines.

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页码：269 / 278

页数：10

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