A Nonlinear Theoretical Model of Magnetization and Magnetostriction for Ferromagnetic Materials under Applied Stress and Magnetic Fields  

作　　者：Pengpeng Shi 时朋朋(School of Civil Engineering&Institute of Mechanics and Technology,Xi'an University of Architecture and Technology,Xi'an 710055,China)

机构地区：[1]School of Civil Engineering&Institute of Mechanics and Technology,Xi'an University of Architecture and Technology,Xi'an 710055,China

出　　处：《Chinese Physics Letters》2020年第8期136-141,共6页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(Grant No.11802225);the Natural Science Basic Research Plan in the Shaanxi Province of China(Grant No.2019JQ-261).

摘　　要：A thermodynamic and micro-statistical model is proposed to explain the magnetization and magnetostriction mechanisms for isotropic ferromagnetic materials.Here a nonlinear magnetostrictive expression enhances the characterization of the nonlinear magnetic-mechanical effect,and the Brillouin function makes it possible to describe the relationship between the equivalent field and magnetization for various types of materials.Through detailed comparisons with the recent models of Wu et al.[Appl.Phys.Lett.115(2019)162406]and Daniel[Eur.Phys.J.:Appl.Phys.83(2018)30904],it is confirmed that the proposed model can provide greater physical insight and a more accurate description of the complex magnetostriction and magnetization behaviors,especially the complex nonlinearity of stress effects.

关 键 词：materials. MAGNETIZATION NONLINEAR 

分 类 号：O482.5[理学—固体物理]