Microwave absorption properties of the hierarchically branched Ni nanowire composites

被引：70

作者：

Qiao, Liang ^{[1
]}

Han, Xianghua ^{[1
]}

Gao, Bo ^{[1
]}

Wang, Jianbo ^{[1
]}

Wen, Fusheng ^{[1
]}

Li, Fashen ^{[1
]}

机构：

[1] Lanzhou Univ, Inst Appl Magnetism, Key Lab Magnetism & Magnet Mat, Minist Educ, Lanzhou 730000, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2009年 / 105卷 / 05期

基金：

中国国家自然科学基金;

关键词：

eddy currents; ferromagnetic materials; magnetic anisotropy; magnetic permeability; microwave spectra; nanocomposites; nanowires; nickel; MAGNETIC-PROPERTIES;

D O I：

10.1063/1.3081649

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Microwave absorber using hierarchically branched Ni nanowires based composite was introduced in this work. The nanostructure constituents greatly suppressed the eddy current and improved the magnetic anisotropy. Their composite with wax matrix showed strong and broadband electromagnetic attenuation around 8.23 GHz where the magnetic mode was excited. The resonance absorption character was discussed by fitting the permeability spectrum using well-known theoretical equations (Landau-Lifshitz-Gilbert equation and Kittel formula).

引用

页数：4

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