New views on the dissipation in soft magnetic ferrites

被引：115

作者：

van der Zaag, PJ ^{[1
]}

机构：

[1] Philips Res Labs, NL-5656 AA Eindhoven, Netherlands

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1999年 / 196卷

关键词：

ferrites; dissipation; hysteresis; domain structure; neutron depolarization; MnZn ferrite; intragranular domain wall loss;

D O I：

10.1016/S0304-8853(98)00732-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Neutron depolarization experiments show that below a certain grain size, polycrystalline ferrites are composed of mono-domain grains. These mono-domain ferrites exhibit low dissipation at MHz frequencies. This is attributed to the absence of intragranular domain wall movement, i.e. a new microscopic origin for dissipation in ferrites has been identified. The implication of this finding for the domain wall contribution to hysteresis is discussed. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：315 / 319

页数：5

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