Moving vector Preisach hysteresis model and δM curves

Author

Ossart, Florence ; Davidson, Robert ; Charap, Stanley H.

Author_Institution

Data Storage Syst. Center, Carnegie Mellon Univ., Pittsburgh, PA, USA

Volume

30

Issue

6

fYear

1994

fDate

11/1/1994 12:00:00 AM

Firstpage

4260

Lastpage

4262

Abstract

The δM curves predicted by the vector Preisach model are analyzed and proved to always be negative. A mean interaction field parallel to the magnetization is added to the model so as to reproduce the positive δM curve of barium ferrite particulate media. By using this model in self consistent field computation, the typical overwrite behavior of barium ferrite has been reproduced. Calculated dc-erasure has been found to be more efficient than ac-erasure, which is consistent with experimental results

Keywords

SCF calculations; coercive force; ferrites; magnetic hysteresis; magnetic particles; magnetic recording; remanence; soft magnetic materials; δM curves; ac-erasure; barium ferrite particulate media; dc-erasure; magnetization; mean interaction field; moving vector Preisach hysteresis model; overwrite behavior; self consistent field computation; Atmospheric modeling; Barium; Data storage systems; Demagnetization; Density functional theory; Ferrites; Magnetic hysteresis; Magnetic materials; Magnetization; Remanence;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.334054

Filename

334054