MAGNETIC-PROPERTIES OF THE SPIN-1/2 FERROMAGNETIC-FERROMAGNETIC-ANTIFERROMAGNETIC TRIMERIZED HEISENBERG CHAIN

被引：165

作者：

HIDA, K

机构：

[1] Department of Physics, College of Liberal Arts, Saitama University, Urawa

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1994年 / 63卷 / 06期

关键词：

TRIMERIZED HEISENBERG CHAIN; MAGNETIZATION; MAGNETIC SUSCEPTIBILITY; HIGH TEMPERATURE EXPANSION; NUMERICAL DIAGONALIZATION;

D O I：

10.1143/JPSJ.63.2359

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The magnetic properties of the ferromagnetic-ferromagnetic-antiferromagnetic trimerized spin-1/2 Heisenberg chain are studied theoretically. The high temperature susceptibilty and the ground state saturation magnetic field are calculated and the exchange energies of the trimer compound 3CuCl2 . 2dx are determined. The magnetization curve is obtained by numerical diagonalization of finite size systems. The result explains the low temperature magnetization data for 3CuCl2 . 2dx with the exchange energies obtained as above. It is predicted that the magnetization curve has a plateau at 1/3 of the saturation magnetization if the ferromagnetic exchange energy is comparable to or smaller than the antiferromagnetic exchange energy.

引用

页码：2359 / 2364

页数：6

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