A Preisach-Neel model with thermally variable variance

Author

Borcia, Ion Dan ; Spinu, Leonard ; Stancu, Alexandru

Author_Institution

Fac. of Phys., Al.I. Cuza Univ., Iasi, Romania

Volume

38

Issue

5

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

2415

Lastpage

2417

Abstract

A thermal variable variance Preisach-Neel model was developed. The effect of the applied field and of the interaction variance was studied in zero field cooled simulated processes using different expressions for the thermal barrier expression and different ways of Preisach distribution modification due to thermal effects. The advantages and disadvantages of using each variant of the model were investigated.

Keywords

Curie temperature; coercive force; magnetic hysteresis; magnetic particles; magnetic recording; nanostructured materials; probability; superparamagnetism; Preisach distribution modification; Preisach-Neel model; applied field effect; coercive field; interaction variance; magnetic hysteresis; magnetic recording media; magnetization processes; nanoparticulate media; parameter identification; superparamagnetic Curie temperature; thermal barrier expression; thermally variable variance; zero field cooled simulated processes; Coercive force; Energy barrier; Fluctuations; Magnetic moments; Magnetization processes; Nanoparticles; Nonlinear equations; Polarization; Temperature;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2002.803611

Filename

1042206