Analysis of thermal critical curves in temperature and time dependent Preisach type models

Issue title: Proceedings of the tenth International Symposium on Applied Electromagnetics and Mechanics ISEM-Tokyo

Article type: Research Article

Authors: Borcia, I.D.^{a; *} | Spinu, L.^b | Stancu, Al.^a

Affiliations: [a] Faculty of Physics, "Al. I. Cuza" University, Iasi, 6600, Romania | [b] AMRI, University of New Orleans, LA 70148, USA

Correspondence: [*] Corresponding author: Ion Dan Borcia, Faculty of Physics, "Al. I. Cuza" University, 11 Blvd.Copou, IASI -- 6600, Romania. Tel.: +40 32 201176; Fax: +40 32 201205; E-mail: [email protected]

Abstract: The shape and the movement of the critical curves in the Preisach plane are investigated using the numerical solution of master equation with variable magnetic field and temperature. It is shown that the shape of the thermal critical curve is a curve line. The movement of the thermal boundaries is simulated in magnetization processes with constant or variable field. Using this model we can explain the dependence of the coercivity on the variation rate of the magnetic field.

DOI: 10.3233/JAE-2002-327

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 13, no. 1-4, pp. 323-328, 2002