Phenomenological model for the remanent magnetization of dilute quasi-one-dimensional antiferromagnets

被引：1
|
作者：
Vieira, AP [1 ]
Salinas, SR [1 ]
机构：
[1] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil
来源：
PHYSICAL REVIEW B | 2002年 / 66卷 / 22期
关键词：
D O I：
10.1103/PhysRevB.66.224411
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present a phenomenological model for the remanent magnetization at low temperatures in the quasi-one-dimensional dilute antiferromagnets (CH3NH3)Mn1-xCdxCl3.2H(2)O and (CH3)(2)NH2Mn1-xCdxCl3.2H(2)O. The model assumes the existence of uncompensated magnetic moments induced in the odd-sized segments generated along the Mn2+ chains upon dilution. These moments are further assumed to correlate ferromagnetically after removal of a cooling field. Using a (mean-field) linear-chain approximation and a reasonable set of model parameters, we are able to reproduce the approximate linear temperature dependence observed for the remanent magnetization in the real compounds.
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页码：1 / 5
页数：5
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