THEORETICAL-STUDY OF THE VALENCE TRANSITION IN SM1-XMXS ALLOYS

被引：6

作者：

AVELINE, I

IGLESIASSICARDI, JR

机构：

[1] Instituto de Física, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS

来源：

JOURNAL OF LOW TEMPERATURE PHYSICS | 1979年 / 35卷 / 3-4期

关键词：

D O I：

10.1007/BF00115590

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present a theoretical model to explain the valence transitions of Sm in Sm1 - xMxS alloys, where M is a transition metal (e.g., Y or La). The f-level of Sm is described as a zero-width band with a finite Coulomb repulsion U, hybridized with the d band of the alloy, which is treated in the coherent potential approximation (CPA). The results show a change of the number of 4 f electrons as a function of the concentration, which explains the valence transition observed in these alloys. © 1979 Plenum Publishing Corporation.

引用

页码：433 / 447

页数：15

共 20 条

[1]

Avignon M., 1976, Journal of Magnetism and Magnetic Materials, V3, P88, DOI 10.1016/0304-8853(76)90016-0

[2]

COQBLIN B, 1976, J MAGN MAGN MATER, V3, P67

[3] THEORY OF VALENCE MIXING FOR RARE-EARTH COMPOUNDS [J].