JC MEASUREMENTS AND THE OBSERVATION OF FLUX MOVEMENTS AND FLUX JUMPS IN QUENCH-AND-MELT GROWTH YBCO BY A PULSED MAGNETIC-FIELD

被引：14

作者：

TAKIZAWA, T

KOSAKA, M

KANBARA, K

MORITA, M

SAWANO, K

机构：

[1] TOKYO IND INC,SETAGAYA KU,TOKYO 155,JAPAN

[2] NIPPON STEEL CORP LTD,ADV MAT & TECHNOL RES LABS,KAWASAKI 211,JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 1991年 / 30卷 / 10B期

关键词：

OXIDE SUPERCONDUCTORS; Y-BA-CU-O; QUENCH-AND-MELT GROWTH; CRITICAL CURRENT DENSITY; FLUX MOTION; FLUX JUMP; PULSED MAGNETIC FIELD;

D O I：

10.1143/JJAP.30.L1790

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An observation of the flux motion in a ring-shaped quench-and-melt growth (QMG) YBCO has been attempted under a pulsed magnetic field in a temperature range from T(c) down to 25 K. The transport critical current density (J(c)) is estimated from the magnetic field where the flux just enters into the central hole of the sample ring. At low temperatures, the flux jump is clearly observed and its interpretation is made in terms of the traditional stabilization theory. In a thin sample, a peculiar flux motion suggesting the undulation of flux lines is observed.

引用

页码：L1790 / L1793

页数：4