Restoration of the microstructure of Ba2YCu3O7 − δ at T > 900°C after low-temperature decomposition

被引：0
|
作者：
I. B. Bobylev
E. I. Kuznetsova
T. P. Krinitsina
N. A. Zyuzeva
S. V. Sudareva
E. P. Romanov
机构：
[1] Russian Academy of Sciences,Institute of Metal Physics, Ural Branch
来源：
The Physics of Metals and Metallography | 2011年 / 112卷
关键词：
low-temperature decomposition; structure defects; pinning centers; critical current density;
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学科分类号：
摘要：
Transmission electron microscopy and optical microscopy have been used to study the structure of the nonstoichiometric YBa2Cu3O7 − δ compound subjected to low-temperature annealing (200–300°C) and subsequent restoration annealing at 930–950°C. It was shown that the retention of part of structural defects, which were formed during decomposition and interaction with water vapor, after restoration annealing determines structural state of the compound that is typical of materials exhibiting improved electrophysical characteristics.
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页码：165 / 169
页数：4
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