Measurements of output-dependent Preisach functions

Author

Vajda, Ferenc ; Torre, Edward Della

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., George Washington Univ., Washington, DC, USA

Volume

27

Issue

6

fYear

1991

fDate

11/1/1991 12:00:00 AM

Firstpage

4757

Lastpage

4762

Abstract

The interiors of hysteresis loops were examined for commercial recording tape samples of γ-Fe₂O₃ and Co-modified γ-Fe₂O₃. It was found that the minor loops did not satisfy the congruency condition of the classical Preisach model. Since both the moving model and the product model are capable of describing minor loops whose height varies with the magnetization, they were used to analyze this data. It was found that the results were consistent with the expectations of the moving model and not with the product model. An identification method for the moving parameter is given. Two models for the reversible component of the magnetization that are compatible with the moving model are presented

Keywords

iron compounds; magnetic hysteresis; magnetic recording; magnetic tapes; magnetisation reversal; CoFe₂O₃; Fe₂O₃; classical Preisach model; commercial recording tape; congruency condition; hysteresis loops; identification method; magnetization; minor loops; moving model; moving parameter; output-dependent Preisach functions; product model; reversible component; Data analysis; History; Hysteresis; Magnetic analysis; Magnetic susceptibility; Magnetization; Micromagnetics; Noise robustness; Parameter estimation; Sufficient conditions;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.278938

Filename

278938