Optimization of stability of YBa2-xSrxCu3O7-δ in water

被引：5

作者：

Sharma, S ^{[1
]}

Bhalla, GL ^{[1
]}

Trigunayat, GC ^{[1
]}

机构：

[1] Univ Delhi, Dept Phys & Astrophys, Delhi 110007, India

来源：

PHYSICA C | 1999年 / 328卷 / 3-4期

关键词：

superconductivity; doping; stability; water treatment;

D O I：

10.1016/S0921-4534(99)00494-3

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Stability of YBa2-xSrxCu3O7-delta (0 < x < 0.6) in water has been investigated employing R-T measurements, oxygen content measurements, X-ray diffractometry (XRD) and scanning electron microscopy (SEM). The Sr-doped samples are found to degrade slower than the undoped YBa2Cu3O7-delta samples, but rate of degradation increases with the dopant concentration. Optimum stability is observed for the dopant fraction x = 0.2. The enhanced stability is attributed to a favourable redistribution of the oxygen ions and reorganisation of bonding in the unit cell. (C) 1999 Elsevier Science B. V. All rights reserved.

引用

页码：157 / 162

页数：6

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