The effect of the microstructure on the microwave absorption properties of Fe-SiO2 nanogranular powder

被引：4

作者：

Fujieda, T ^{[1
]}

Ikeda, S ^{[1
]}

Suzuki, S ^{[1
]}

Hidaka, K ^{[1
]}

Hayashibara, M ^{[1
]}

机构：

[1] Hitachi Ltd, Hitachi Res Lab, Hitachi, Ibaraki 3191292, Japan

来源：

JOURNAL OF THE JAPAN INSTITUTE OF METALS | 2002年 / 66卷 / 12期

关键词：

nanogranular; ferromagnetic; high electrical resistance; permeability; permittivity; microwave absorption;

D O I：

10.2320/jinstmet1952.66.12_1345

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Nano-sized processing is reported to realize distinctive features in physical properties. We found a remarkable microwave absorption property caused by the increase of permeability and permittivity when nanogranulating ferromagnetic metals (Fe) and high electrical resistance ceramics (SiO2) in the frequency range of GHz. In this paper, we report the microwave absorption properties is effected by the dispersion state of Si-oxides in Fe-SiO2 nanogranular powder and the improvement of the microwave absorption properties by nanocompositing Fe and SiO2 is caused by the diffusion between Fe nanocrystal grains and amorphous Si-oxides in MA process.

引用

页码：1345 / 1349

页数：5

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