Metal-insulator transition in Cu1-xZnxIr2S4 system

被引：11

作者：

Cao, G ^{[1
]}

Suzuki, H ^{[1
]}

Furubayashi, T ^{[1
]}

Kitazawa, H ^{[1
]}

Matsumoto, T ^{[1
]}

机构：

[1] Natl Res Inst Met, Tsukuba, Ibaraki 3050047, Japan

来源：

PHYSICA B | 2000年 / 281卷

关键词：

metal-insulator transition; Zn substitution effect; CuIr2S4;

D O I：

10.1016/S0921-4526(99)01101-1

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report on the effect of Zn substitution for Cu in CuIr2S4 spinel, which shows the metal-insulator (M1) transition at about 230 K accompanied with a cubic-to-tetragonal structural phase transformation. It was shown that the solid solution of Cu(1-x)Zn(x)lr(2)S(4) can be formed for 0 less than or equal to x less than or equal to 0.5. The MI transition temperature decreases rapidly with increasing Zn content, and no MI transition can be observed for x > 0.3. The magnetic susceptibility in metallic state decreases with the Zn substitution, suggesting a hole-filling mechanism. Low-temperature X-ray diffraction revealed that the tetragonal distortion of insulating phase decreased with increasing Zn content. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：636 / 637

页数：2

共 9 条

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