Single crystal magnetic susceptibility of the quasi-one-dimensional antiferromagnet KFeS2

被引：9
|
作者：
Tiwary, SK [1 ]
Vasudevan, S [1 ]
机构：
[1] INDIAN INST SCI,DEPT INORGAN & PHYS CHEM,BANGALORE 560012,KARNATAKA,INDIA
来源：
SOLID STATE COMMUNICATIONS | 1997年 / 101卷 / 06期
关键词：
magnetically ordered materials; exchange and superexchange;
D O I：
10.1016/S0038-1098(96)00617-5
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The single crystal magnetic susceptibility of the quasi-one-dimensional antiferromagnet KFeS2 is reported. The high temperature isotropic susceptibility is typical of a spin-1/2 Heisenberg chain. The intra- and interchain exchange constants are -44.7 K and 53.94 K, respectively. At 250 K, KFeS2 exhibits a well defined transition to a three-dimensionally ordered antiferromagnetic state. The calculated perpendicular susceptibility at OK considering the zero point reduction in magnetisation for a S = 1/2 one-dimensional chain from spin wave theory is close to the projected value obtained from the experimental data. Copyright (C) 1997 Elsevier Science Ltd
引用
收藏
页码：449 / 452
页数：4
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