CRITICAL-CURRENT DENSITY AND MAGNETIC-PROPERTIES OF A MELT-PROCESSED Y0.8HO0.2BA2CU3OY SUPERCONDUCTOR

被引：13

作者：

FENG, Y

ZHOU, L

WANG, KG

ZHANG, YH

JIN, X

ZHANG, YT

JIN, JR

YAO, XX

机构：

[1] NW INST NONFERROUS MET RES,SHAANXI 721014,PEOPLES R CHINA

[2] CCAST,WORLD LAB,BEIJING 100080,PEOPLES R CHINA

[3] NANJING UNIV,DEPT PHYS,NANJING 210008,PEOPLES R CHINA

来源：

JOURNAL OF APPLIED PHYSICS | 1993年 / 74卷 / 08期

关键词：

D O I：

10.1063/1.354295

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have prepared a bulk Y0.8Ho0.2Ba2Cu3Oy superconductor by the powder melting process method and investigated its magnetization curves and magnetic relaxation in the temperature range 55-77 K at different fields. The J(c) values at a certain temperature and field is estimated by Bean's model. It is found that J(c) decreases with the magnetic field ar-cording to a power law, whereas it drops exponentially with temperature. The dependence on temperature of the maximum diamagnetization field H(p) and the remanent magnetization M(rem) is discussed. The magnetic relaxation indicates that the magnetization M varies logarithmically with time. The relaxation rate dM/d ln t is also studied.

引用

页码：5096 / 5100

页数：5

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