Microstructure change during oxygen annealing and the effect on the levitation force of melt-textured Y-Ba-Cu-O superconductors

被引：15

作者：

Kim, CJ

Kim, KB

Kuk, IH

Hong, GW

Lee, YS

Park, HS

机构：

[1] Korea Atom Energy Res Inst, Supercond Res Lab, Taejon 305600, South Korea

[2] Sungkyunkwan Univ, Dept Met Engn, Kyung Ki Do 440756, South Korea

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 1997年 / 10卷 / 12期

关键词：

D O I：

10.1088/0953-2048/10/12/019

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The influence of oxygen annealing on the levitation force was studied for melt-textured multidomain YBCO samples cooled with and without magnetic field (field cooled (FC) and zero-field cooled (ZFC)). For both the FC and ZFC samples the repulsive force rapidly increased with increasing oxygen annealing time, reaching a maximum value at a certain annealing time and then slightly decreasing when the samples were further annealed. The attractive force of the FC samples followed a similar pattern to that of the repulsive force while the attractive force of the ZFC samples was small and nearly constant regardless of annealing time. The variation of the levitation force with oxygen annealing time is explained in terms of the microstructure developed during oxygen annealing.

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页码：947 / 954

页数：8

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