Influence of shape anisotropy on microwave complex permeability in carbonyl iron flakes/epoxy resin composites  

作　　者：温福昇 乔亮 周栋 左文亮 伊海波 李发伸 

机构地区：[1]Institute of Applied Magnetics, Key Laboratory of Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University

出　　处：《Chinese Physics B》2008年第6期2263-2267,共5页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant Nos 90505007 and 10774061)

摘　　要：To explore the mechanism of carbonyl iron flake composites for microwave complex permeability, this paper investigates the feature of the flakes. The shape anisotropy was certified by the results of the magnetization hysteresis loops and the Mossbauer spectra. Furthermore, the shape anisotropy was used to explain the origin of composite microwave performance, and the calculated results agree with the experiment. It is believed that the shape anisotropy dominates microwave complex permeability, and the natural resonance plays main role in flake.To explore the mechanism of carbonyl iron flake composites for microwave complex permeability, this paper investigates the feature of the flakes. The shape anisotropy was certified by the results of the magnetization hysteresis loops and the Mossbauer spectra. Furthermore, the shape anisotropy was used to explain the origin of composite microwave performance, and the calculated results agree with the experiment. It is believed that the shape anisotropy dominates microwave complex permeability, and the natural resonance plays main role in flake.

关 键 词：carbonyl iron flake complex permeability shape anisotropy Mossbauer spectroscopy 

分 类 号：TB332[一般工业技术—材料科学与工程]