Cut-off frequency of magnetostrictive materials based on permeability spectra

被引：11

作者：

Meng, Hao ^{[1
]}

Zhang, Tianli ^{[1
]}

Jiang, Chengbao ^{[1
]}

机构：

[1] Beihang Univ, Key Lab Aerosp Mat & Performance, Minist Educ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2012年 / 324卷 / 12期

关键词：

TbDyFe; Magnetostriction; Cut-off frequency; Loss; Composite; TERFENOL-D COMPOSITES; DESIGN;

D O I：

10.1016/j.jmmm.2012.01.024

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The loss behavior and cut-off frequency of TbDyFe alloy and TbDyFe/epoxy composite have been investigated by measuring their permeability spectra. The loss factor of TbDyFe alloy increases exponentially as the frequency goes up, while it is almost unchanged for the TbDyFe/epoxy composite. The loss factor value for the TbDyFe composite is only 4.3% of that for the monolithic TbDyFe alloy at high frequency of 10 kHz under the peak magnetic induction of 10 mT. The cut-off frequency of TbDyFe/epoxy composite is 6800 kHz, 3 orders of magnitude larger than that of TbDyFe alloy. The cutoff frequency is found to be the ferromagnetic resonance frequency and can be calculated from Snoek's law. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：1933 / 1937

页数：5

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