Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.jmmm.2006.08.003
Title: Static and dynamic magnetic properties of CoZn substituted Z-type barium ferrite Ba3 Cox Zn2 - x Fe24 O41 composites
Authors: Li, Z.W. 
Wu, Y.P. 
Lin, G.Q. 
Chen, L. 
Keywords: Complex permeability
CoZn substituted barium ferrite
Electromagnetic materials
High-frequency magnetic properties
Issue Date: Mar-2007
Citation: Li, Z.W., Wu, Y.P., Lin, G.Q., Chen, L. (2007-03). Static and dynamic magnetic properties of CoZn substituted Z-type barium ferrite Ba3 Cox Zn2 - x Fe24 O41 composites. Journal of Magnetism and Magnetic Materials 310 (1) : 145-151. ScholarBank@NUS Repository. https://doi.org/10.1016/j.jmmm.2006.08.003
Abstract: The static and dynamic magnetic properties were studied for Z-type barium ferrites Ba3 Cox Zn2 - x Fe24 O41 with x = 0-2.0 and the corresponding composites, and the attenuation spectra of the composite materials were calculated from the complex permittivity and permeability. The anisotropy of Ba3 Cox Zn2 - x Fe24 O41 is modified from easy c-axis to easy c-plane at x = 0.4-0.8. The resonance and reflection characteristics of the composites are significantly different for c-axis and c-plane anisotropy. For c-plane anisotropy, only natural resonance exists, while for c-axis anisotropy, two resonances, the natural resonance and wall resonance, are observed. The static permeability μ0 ′ and the maximum imaginary permeability μmax ″ are increased, while the resonance is shifted to lower frequency, as the Co substitution is decreased. The predicted frequency response of reflection loss showed that Ba3 Cox Zn2 - x Fe24 O41 composites are good electromagnetic materials with low reflectivity and broad bandwidth at microwave frequency. © 2006 Elsevier B.V. All rights reserved.
Source Title: Journal of Magnetism and Magnetic Materials
URI: http://scholarbank.nus.edu.sg/handle/10635/115948
ISSN: 03048853
DOI: 10.1016/j.jmmm.2006.08.003
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