Modelling magnetic relaxation phenomena in fine particles systems with a Preisach-Neel model

被引：29

作者：

Spinu, L ^{[1
]}

Stancu, A ^{[1
]}

机构：

[1] Alexandru Ioan Cuza Univ, Fac Phys, Iasi 6600, Romania

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1998年 / 189卷 / 01期

关键词：

Preisach-Neel model; Stoner-Wohlfarth model; static and dynamic interactions;

D O I：

10.1016/S0304-8853(98)00205-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The problem of the waiting time effect in the relaxation under field of the zero-field-cooled magnetisation of ultrafine particle systems is investigated using a Preisach-Neel-type model. In the Preisach plane, one uses a double-well potential distribution calculated with the Stoner-Wohlfarth model. Static and dynamic interactions for ultrafine particulate systems are taken into account. The simulated results are in good qualitative agreement with the experimental ones which attest that the ageing effect is related to the existence of the interactions between particles. (C) 1998 Elsevier Science B.V. All rights reserved.

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页码：106 / 114

页数：9

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