Magnetic susceptibilities of AV(2)O(5) (A=Li and Cs) with square pyramidal V(IV)O-5

被引：66

作者：

Isobe, M

Ueda, Y

机构：

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1996年 / 65卷 / 10期

关键词：

gamma-LiV2O5; CsV2O5; magnetic susceptibility; S = 1/2 1-D Heisenberg antiferromagnetic linear chain system; S = 1/2 dimer system;

D O I：

10.1143/JPSJ.65.3142

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Stoichiometric powder samples of gamma-LiV2O5 and CsV2O5 were synthesized and the magnetic susceptibilities were measured in the temperature range from 5 K to 700 K. The magnetic susceptibilities of gamma-LiV2O5 and CsV2O5 show good fits to the equations for a S = 1/2 one-dimensional Heisenberg antiferromagnetic linear chain model and a S = 1/2 dimer model, respectively, although the obtained g-values are rather small (1.8 for both compounds). The ground state of gamma-LiV2O5 is neither a spin singlet state nor a magnetically ordered state, while CsV2O5 is in a spin singlet state below 30 K. The results are discussed in comparison with the magnetic properties of alpha'-NaV2O5 and CaV2O5.

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页码：3142 / 3145

页数：4

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