FLUX CREEP CHARACTERISTICS AFTER HIGH-TEMPERATURE MAGNETIZATION IN YBACUO SUPERCONDUCTOR

被引：13
|
作者：
SAKAMOTO, N [1 ]
AKUNE, T [1 ]
MATSUSHITA, T [1 ]
机构：
[1] KYUSHU INST TECHNOL, DEPT COMP SCI & ELECTR, IIZUKA 820, JAPAN
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1992年 / 31卷 / 10B期
关键词：
FLUX CREEP; CRITICAL STATE MODEL; HIGH-TEMPERATURE MAGNETIZATION; YBACUO; DIAMAGNETIC STRENGTH;
D O I：
10.1143/JJAP.31.L1470
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Flux creep characteristics at an operating temperature T(o) have been investigated experimentally after temperature changes from the critical state, which were created by cooling a YBaCuO superconductor magnetized at higher temperatures T(o) + DELTAT (HTM). Drastic reduction in the creep rate by one order of magnitude was observed for DELTAT greater than or similar to 3 K at T(o) ranging from 40 to 77 K. A transient state with high HTM creep rate has also been observed at high operating temperature and is ascribed to flux profile variations induced by strengthened diamagnetic properties at low temperatures.
引用
收藏
页码：L1470 / L1473
页数：4
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