Strain and Thermal Effects on Magnetic Hysteresis of a Modified JA-SW Model

Zizheng Guo, Chudong Xu, Weiqing Jia and Jun Liu
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Zizheng Guo: Department of Applied Physics, College of Electronic Engineering, South China Agricultural University, Guangzhou, China
Chudong Xu: Department of Applied Physics, College of Electronic Engineering, South China Agricultural University, Guangzhou, China
Weiqing Jia: Department of Applied Physics, College of Electronic Engineering, South China Agricultural University, Guangzhou, China
Jun Liu: Department of Applied Physics, College of Electronic Engineering, South China Agricultural University, Guangzhou, China

Noble International Journal of Scientific Research, 2018, vol. 2, issue 7, 42-48

Abstract: The JA (Jiles-Atherton) - SW(Stoner-Wohlfarth ) model is extended to include the strain or stress anisotropy. With the improved model, the strain and thermal effects on magnetic hysteresis loss are studied. Interesting results are shown in two aspects. Firstly, a transition-like behavior is found for the temperature dependent hysteresis loss (or more precisely, the hysteresis curve area). Secondly, as the magnitude of strain anisotropy increases, the hysteresis loss decreases initially and then increases, resulting in a valley structure of the curve of the strain dependent hysteresis loss. The results are compared with those of literature and the differences between them are discussed.

Keywords: Magnetic Films and Multiplayers; Magnetic Hysteresis Model; Strain; Temperature. (search for similar items in EconPapers)
Date: 2018
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