Microwave Permeability and Mossbauer Spectra of Flaky Fe-Si-Al Particles

被引：22

作者：

Han, Mangui ^{[1
]}

Liang, Difei ^{[1
]}

Rozanov, Konstantin N. ^{[2
]}

Deng, Longjiang ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Peoples R China

[2] Russian Acad Sci, Inst Theoret & Appl Electromagnet, Moscow 119991, Russia

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2013年 / 49卷 / 03期

关键词：

Electromagnetic composites; microwave permeability; Mossbauer spectroscopy; Sendust alloy;

D O I：

10.1109/TMAG.2012.2227690

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Fe84.94Si9.68Al5.38 flaky particles have been obtained by ball attrition method. The volume fraction dependence of microwave permeability has been measured for composites filled with these particles. Effective medium theories have been employed to extract the apparent microwave permeability. It is found that the flaky Fe-Si-Al particles have large apparent microwave permeability and large microwave magnetic loss. For example, at 0.5 GHz, the real and imaginary parts of apparent permeability are 10 and 5, respectively. The extracted microwave permeability is found to be consistent with generalized Snoek's limit. Due to high microwave magnetic loss, the flaky Fe-Si-Al particles can be useful for technical applications in the field of electromagnetic compatibility. Mossbauer spectroscopy measurements show that the hyperfine magnetic field and isomer shift have wide distribution, indicating that Fe atoms in the flaky Fe-Si-Al alloys have complicated environments.

引用

页码：982 / 985

页数：4

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