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IDENTIFICATION OF THE GENERALISED PREISACH MODEL PARAMETERS FOR SYSTEMS WITH MAGNETOSTATIC INTERACTIONS

M. Cerchez1, L. Stoleriu1, Al. Stancu1,*

Affiliation

  1. Alexandru Ioan Cuza University, Iasi, 6600 Romania

Abstract

This paper presents the testing of a recently developed Preisach identification algorithm. The algorithm uses the properties of the Integral Generalized DM plot that is very sensitive to interactions and thus produces a more accurate choice of parameters. The parameters obtained in the identification produce simulations that fit first and second order magnetization processes with reasonable precision. For some of the metal particle recording media studied with negative DM curves, a good fit can only be obtained using negative mean field interactions. This is different from most acicular systems where a positive mean term is usually required..

Keywords

Preisach Model, Micromagnetic modelling, Particle recording media.

Submitted at: Aug. 1, 2002
Accepted at: March 12, 2003

Citation

M. Cerchez, L. Stoleriu, Al. Stancu, IDENTIFICATION OF THE GENERALISED PREISACH MODEL PARAMETERS FOR SYSTEMS WITH MAGNETOSTATIC INTERACTIONS, Journal of Optoelectronics and Advanced Materials Vol. 5, Iss. 1, pp. 351-354 (2003)