Frequency dependence of the complex susceptibility for a spin-1 Ising model

被引：7

作者：

Erdem, Riza ^{[1
]}

机构：

[1] Gaziosmanpasa Univ, Dept Phys, TR-60250 Tokat, Turkey

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2009年 / 321卷 / 17期

关键词：

Complex susceptibility; Frequency dependence; Argand diagram; Spin-1 Ising model; Onsager theory; PHASE-TRANSITION POINT; EMERY-GRIFFITHS MODEL; DYNAMIC SUSCEPTIBILITY; RELAXATION PHENOMENA; IRREVERSIBLE-PROCESSES; RECIPROCAL RELATIONS; MAGNETIC-RELAXATION; UNSTABLE SOLUTIONS; SYSTEM; DISPERSION;

D O I：

10.1016/j.jmmm.2009.03.042

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

l The complex susceptibility or the dynamic susceptibility (chi(omega) = chi'(omega)-i chi ''(omega)) for a spin-1 Ising system with bilinear and biquadratic interactions is obtained on the basis of Onsager theory of irreversible processes. If the logarithm of the susceptibilities is plotted as a function of the logarithm of frequency, then the real part (chi') displays a sequence of plateau regions and the imaginary part (chi '') has a sequence of maxima in the ordered or ferromagnetic phase. On the other hand, only one plateau region in chi' and one maximum in chi '' is observed in the disordered or paramagnetic phase. Argand or Cole-Cole plots(chi ''-chi') for a selection of temperatures are also shown, and a sequence of semicircles is illustrated in the ordered phase and only one semicircle for the disordered phase in these plots. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：2592 / 2595

页数：4

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