Title :
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
fDate :
9/1/2002 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2002.803611
