ELECTRICAL-CONDUCTION AND ORDERING IN CUXNI1-XMN2O4 SPINELS

被引：16

作者：

BALIGA, S

JAIN, AL

机构：

[1] Infrared/Electro-Optics Research Laboratory, Servo Corporation of America, Hicksville, NY 11802

来源：

MATERIALS LETTERS | 1990年 / 9卷 / 5-6期

关键词：

Copper Compounds - Structure - Manganese Compounds - Nickel Compounds - Oxides - Electric Conductivity;

D O I：

10.1016/0167-577X(90)90124-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Polycrystalline samples of composition CuxNi1-xMn2O4 were prepared and the electrical resistance studied as a function of temperature from 100 to 300 K. The plot of In R versus 1 T for CuMn2O4 (x = 1) shows a step-like increase at 140 K which is similar to that observed in Fe3O4. This increase in resistance for CuMn2O4 may, by analogy with the Verwey transition in Fe3O4, be attributed to the ordering of manganese ions at the octahedral sites. For increasing nickel addition, the resistivity increases to the high value for NiMn2O4 and the step in the plot disappears. © 1990.

引用

页码：180 / 184

页数：5

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