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Modeling of two-phase magnetic materials based on Jiles-Atherton theory of hysteresis

Raghunathan, Arun Kumar, Melikhov, Yevgen, Snyder, John Evan and Jiles, David 2012. Modeling of two-phase magnetic materials based on Jiles-Atherton theory of hysteresis. Journal of Magnetism and Magnetic Materials 324 (1) , pp. 20-22. 10.1016/j.jmmm.2011.07.017

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The Jiles–Atherton (JA) theory of hysteresis has been extended in the present paper to model hysteresis in two-phase magnetic materials. Two-phase materials are those that exhibit two magnetic phases in one hysteresis cycle: one at lower fields and the other at higher fields. In magnetic hysteresis, the transition from one phase to the other i.e. low field phase to high field phase depends mainly on the exchange field. Hence, the material-dependent microstructural parameters of JA theory: spontaneous magnetization, MS, pinning factor, k, domain density, a, domain coupling, α, and reversibility factor, c, are represented as functions of the exchange field. Several cases based on this model have been discussed and compared with the measured data from existing literature. The shapes of the calculated and measured hysteresis loops are in excellent agreement.

Item Type: Article
Status: Published
Schools: Engineering
Subjects: Q Science > QC Physics
T Technology > TA Engineering (General). Civil engineering (General)
Uncontrolled Keywords: Magnetic hysteresis; Magnetization; Two-phase material; Jiles–Atherton theory
Publisher: Elsevier
ISSN: 0304-8853
Last Modified: 05 Mar 2019 21:00

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