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.
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页码：L1470 / L1473
页数：4
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