PHYSICAL-PROPERTIES AND ELECTRONIC-STRUCTURE OF TERNARY BARIUM COPPER SULFIDES

被引：35

作者：

OUAMMOU, A ^{[1
]}

MOUALLEMBAHOUT, M ^{[1
]}

PENA, O ^{[1
]}

HALET, JF ^{[1
]}

SAILLARD, JY ^{[1
]}

CAREL, C ^{[1
]}

机构：

[1] UNIV RENNES 1,CHIM SOLIDE & INORGAN MOLEC LAB,CNRS,URA 1495,F-35042 RENNES,FRANCE

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1995年 / 117卷 / 01期

关键词：

D O I：

10.1006/jssc.1995.1248

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The electrical and magnetic properties of the tetragonal BaCu2S2 and orthorhombic alpha-BaCu4S3 compounds are reported as functions of temperature. The electrical resistivity measurements on pressed pellets show that both compounds are semiconductors. A diamagnetic behavior was found for the two compounds at T > 70 K, followed by a weak paramagnetic increase (mu(eff) less than or equal to 0.2 mu(B)) at lower temperatures. The electronic structure and bonding properties of stoichiometric BaCu2S2 and BaCu4S3 are analyzed by means of extended Huckel tight-binding calculations. The results suggest that both compounds adopt a semiconductor behavior, in agreement with the resistivity measurements. (C) 1995 Academic Press, Inc.

引用

页码：73 / 79

页数：7

共 38 条

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