CHARACTERIZATION OF YBA2CU4O8 HIGH-TEMPERATURE ELECTRICAL-PROPERTIES AND THERMODYNAMIC STABILITY

被引：12

作者：

HONG, BS ^{[1
]}

MASON, TO ^{[1
]}

机构：

[1] NORTHWESTERN UNIV,MAT RES CTR,EVANSTON,IL 60208

来源：

JOURNAL OF MATERIALS RESEARCH | 1991年 / 6卷 / 10期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1557/JMR.1991.2054

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Via in situ electrical property measurements (conductivity, Seebeck coefficient) over the temperature range 500-800-degrees-C and oxygen partial pressure range 10(-4)-1 atm, the equilibrium transport properties and stability range of YBa2Cu4O8 were determined. YBa2Cu4O8 behaves like the intrinsically mixed-valent compound, magnetite (Fe3O4), with small variations in electrical properties with changes in oxygen partial pressure. The decomposition boundary to YBa2Cu3O6+y (or YBa2Cu3.5O7.5 +/- z) and CuO occurs at log(po2,atm) = -1.24 x 10(4)/T(K) + 11.01(773 less-than-or-equal-to T(K) less-than-or-equal-to 1073).

引用

页码：2054 / 2058

页数：5

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