Transmission, Reflection and Dissipation of Microwaves in Magnetic Composites with Nanocrystalline Finemet-Type Flakes

被引：7

作者：

Rinkevich, Anatoly B. ^{[1
]}

Perov, Dmitry V. ^{[1
]}

Ryabkov, Yuriy I. ^{[2
]}

机构：

[1] RAS, MN Miheev Inst Met Phys UB, Sofia Kovalevskaya St 18, Ekaterinburg 620108, Russia

[2] RAS, Inst Chem UB, Pervomayskaya St 48, Syktyvkar 167000, Russia

来源：

MATERIALS | 2021年 / 14卷 / 13期

基金：

俄罗斯科学基金会;

关键词：

magnetic composites; microwaves; absorption; transmission and reflection coefficients; ABSORPTION; RADIATION;

D O I：

10.3390/ma14133499

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The microwave properties of a composite material containing flakes of finemet-type nanocrystalline alloy placed in the epoxy matrix have been investigated. Two compositions have been studied: with 15% and 30% flakes. Frequency dependences of transmission and reflection coefficients are measured in the frequency range from 12 to 38 GHz. The dielectric permittivity and magnetic permeability are obtained, and the microwave losses are calculated. The dependences of transmission and reflection coefficients have been drawn as functions of wave frequency and thickness of the composite material, taking into account the frequency dependences of permittivity and permeability. The regions of maximal and minimal microwave absorption have been defined. The influence of wave interference on the frequency dependence of microwave absorption is studied.

引用

页数：15

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