OXYGEN-CONTENT DETERMINATION OF BI2SR2CA2CU4O11+X SUPERCONDUCTOR BY THERMOGRAVIMETRIC ANALYSIS

被引：3

作者：

KAO, SJ ^{[1
]}

NG, KYS ^{[1
]}

机构：

[1] WAYNE STATE UNIV,DEPT CHEM ENGN,DETROIT,MI 48202

来源：

JOURNAL OF SUPERCONDUCTIVITY | 1991年 / 4卷 / 05期

关键词：

OXYGEN CONTENT; THERMOGRAVIMETRIC; BI2SR2CA2CU4O11+X; BISMUTH SUPERCONDUCTOR;

D O I：

10.1007/BF00618219

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Thermogravimetric analysis of the individual, binary, ternary, and bismuth-based superconductor mixtures have been carried out to elucidate the excess oxygen content of the Bi2Sr2Ca2Cu4O11+x. Our systematic approach eliminates the need to assume initial phase present, original oxygen content, and degree of reduction as in other TG studies. The excess oxygen content of the bismuth superconductor increases from x = 0.38 to x = 0.64 after three heating cycles in oxygen atmosphere. Most of the excess oxygen is associated with the highly oxidized copper (Cu3+) in the superconducting phase/phases.

引用

页码：375 / 384

页数：10

共 32 条

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