Paper Title:
Complex Permeability Spectra of Co-Substituted Lithium Zinc Perminvar Ferrite
  Abstract

The effect of Co-substitution on the complex permeability of LiZn ferrite was studied. The polycrystalline ferrite samples with a composition of ((Li0.5Fe0.5)0.8Zn0.2)1-xCoxFe2.05O4, where x varies from 0 to 0.08, were prepared by solid-reaction method. The sintered samples were annealed at 490oC for 96 h to produce perminvar effect. The complex permeability was measured in the frequency range from 1 MHz to 2 GHz. The Co-substitution can enhance the real part of complex permeability (μ’). The maximum μ’ appears when x=0.02. The Co-substituted LiZn samples, especially for x=0.02 and 0.04, present resonance-type magnetic spectra obviously. The μ’ of the sample for x=0.02 increases because the damping of domain wall movement decreases after the annealing treatment. The resonance character of the annealed sample becomes even more remarkable due to its domain wall stabilization.

  Info
Periodical
Key Engineering Materials (Volumes 368-372)
Edited by
Wei Pan and Jianghong Gong
Pages
591-593
DOI
10.4028/www.scientific.net/KEM.368-372.591
Citation
H. J. Zhao, J. Zhou, L. T. Li, "Complex Permeability Spectra of Co-Substituted Lithium Zinc Perminvar Ferrite", Key Engineering Materials, Vols. 368-372, pp. 591-593, 2008
Online since
February 2008
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Price
$32.00
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