Investigation on permeability-frequency characteristics and microstructureof composite ferrites

Authors
Zhang, HG Li, LT Ma, ZW Zhou, J Yue, ZX Gui, ZL
Citation
Hg. Zhang et al., Investigation on permeability-frequency characteristics and microstructureof composite ferrites, J MAGN MAGN, 218(1), 2000, pp. 67-71
Citations number
13
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
ISSN journal
03048853 → ACNP
Volume
218
Issue
1
Year of publication
2000
Pages
67 - 71
Database
ISI
SICI code
0304-8853(200007)218:1<67:IOPCAM>2.0.ZU;2-E
Abstract
The initial permeability in composite ferrites consisting of low-temperatur e sintering (Ni0.15Cu0.25Zn0.60)Fe2O4 ferrite and Co(2)Z (Ba3Co2Fe24O41) he xaferrite matrix has been measured from 1 to 1000 MHz. The results reveal t hat frequency dependence of initial permeability in the composite ferrites is much different from that of pure (Ni0.15Cu0.25Zn0.60)Fe2O4 spinel or Co( 2)Z hexagonal ferrite. A simple quantitative estimation of permeability for the composite ferrite materials is proposed and possible magnetic mechanis ms generating this kind of difference are discussed. (C) 2000 Elsevier Scie nce B.V. All rights reserved.