High permeability and bimodal resonance structure of flaky soft magnetic composite materials

doi:10.1088/1674-1056/ab8c3b

中国物理B ›› 2020, Vol. 29 ›› Issue (7): 77506-077506.doi: 10.1088/1674-1056/ab8c3b

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

High permeability and bimodal resonance structure of flaky soft magnetic composite materials

Xi Liu(刘曦), Peng Wu(吴鹏), Peng Wang(王鹏), Tao Wang(王涛), Liang Qiao(乔亮), Fa-Shen Li(李发伸)

1 Key Laboratory of Opto-technology and Intelligent Control of Ministry of Education, Lanzhou Jiaotong University, Lanzhou 730000, China;
2 Institute of Applied Magnetism, Key Laboratory for Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou 730000, China

收稿日期:2020-01-03 修回日期:2020-03-29 出版日期:2020-07-05 发布日期:2020-07-05
通讯作者: Xi Liu E-mail:liuxi@mail.lzjtu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11564024, 51731001, and 11574122) and the Fundamental Research Funds for the Central Universities, China (Grant No. lzujbky-2019-kb06).

High permeability and bimodal resonance structure of flaky soft magnetic composite materials

Xi Liu(刘曦)¹, Peng Wu(吴鹏)¹, Peng Wang(王鹏)², Tao Wang(王涛)², Liang Qiao(乔亮)², Fa-Shen Li(李发伸)²

1 Key Laboratory of Opto-technology and Intelligent Control of Ministry of Education, Lanzhou Jiaotong University, Lanzhou 730000, China;
2 Institute of Applied Magnetism, Key Laboratory for Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou 730000, China

Received:2020-01-03 Revised:2020-03-29 Online:2020-07-05 Published:2020-07-05
Contact: Xi Liu E-mail:liuxi@mail.lzjtu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11564024, 51731001, and 11574122) and the Fundamental Research Funds for the Central Universities, China (Grant No. lzujbky-2019-kb06).

摘要/Abstract

摘要： We establish a theoretical bimodal model for the complex permeability of flaky soft magnetic composite materials to explain the variability of their initial permeability. The new model is motivated by finding the two natural resonance peaks to be inconsistent with the combination of the domain wall resonance and the natural resonance. In the derivation of the model, two relationships are explored: the first one is the relationship between the number of magnetic domains and the permeability, and the second one is the relationship between the natural resonance and the domain wall resonance. This reveals that the ball milling causes the number of magnetic domains to increase and the maximum initial permeability to exist after 10 h of ball milling. An experiment is conducted to demonstrate the reliability of the proposed model. The experimental results are in good agreement with the theoretical calculations. This new model is of great significance for studying the mechanism and applications of the resonance loss for soft magnetic composite materials in high frequency fields.

关键词: soft magnetic composite materials, bimodal resonance structure model, permeability, domain wall

Abstract: We establish a theoretical bimodal model for the complex permeability of flaky soft magnetic composite materials to explain the variability of their initial permeability. The new model is motivated by finding the two natural resonance peaks to be inconsistent with the combination of the domain wall resonance and the natural resonance. In the derivation of the model, two relationships are explored: the first one is the relationship between the number of magnetic domains and the permeability, and the second one is the relationship between the natural resonance and the domain wall resonance. This reveals that the ball milling causes the number of magnetic domains to increase and the maximum initial permeability to exist after 10 h of ball milling. An experiment is conducted to demonstrate the reliability of the proposed model. The experimental results are in good agreement with the theoretical calculations. This new model is of great significance for studying the mechanism and applications of the resonance loss for soft magnetic composite materials in high frequency fields.

Key words: soft magnetic composite materials, bimodal resonance structure model, permeability, domain wall

中图分类号: (Fe and its alloys)

75.50.Bb

刘曦, 吴鹏, 王鹏, 王涛, 乔亮, 李发伸. High permeability and bimodal resonance structure of flaky soft magnetic composite materials[J]. 中国物理B, 2020, 29(7): 77506-077506.

Xi Liu(刘曦), Peng Wu(吴鹏), Peng Wang(王鹏), Tao Wang(王涛), Liang Qiao(乔亮), Fa-Shen Li(李发伸). High permeability and bimodal resonance structure of flaky soft magnetic composite materials[J]. Chin. Phys. B, 2020, 29(7): 77506-077506.

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High permeability and bimodal resonance structure of flaky soft magnetic composite materials

High permeability and bimodal resonance structure of flaky soft magnetic composite materials

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