CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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A Nonlinear Theoretical Model of Magnetization and Magnetostriction for Ferromagnetic Materials under Applied Stress and Magnetic Fields |
Pengpeng Shi1,2* |
1School of Civil Engineering & Institute of Mechanics and Technology, Xi'an University of Architecture and Technology, Xi'an 710055, China 2State Key Laboratory for Strength and Vibration of Mechanical Structures, Shaanxi Engineering Research Center of NDT and Structural Integrity Evaluation, School of Aerospace, Xi'an Jiaotong University, Xi'an 710049, China
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Cite this article: |
Pengpeng Shi 2020 Chin. Phys. Lett. 37 087502 |
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Abstract 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.
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Received: 18 April 2020
Published: 28 July 2020
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PACS: |
75.80.+q
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(Magnetomechanical effects, magnetostriction)
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75.60.Ej
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(Magnetization curves, hysteresis, Barkhausen and related effects)
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75.50.Bb
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(Fe and its alloys)
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Fund: Supported by the National Natural Science Foundation of China (Grant No. 11802225) and the Natural Science Basic Research Plan in the Shaanxi Province of China (Grant No. 2019JQ-261). |
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