Ni-Zn Ferrites Composites With Almost Equal Values of Permeability and Permittivity for Low-Frequency Antenna Design

Composites based on ferrite powders Ni 0.95-x ZnxCo 0.05 Fe 1.90 Mn 0.02 O 4 with x=0-0.25, with a volume concentration of 50%, were fabricated and characterized. Dielectric and magnetic properties of the composites were measured over 0.01-16.5 GHz. The permeability of the composites at low frequenc...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2007-01, Vol.43 (1), p.6-10
Main Authors: Kong, L.B., Li, Z.W., Lin, G.Q., Gan, Y.B.
Format: Article
Language:English
Subjects:
Antennas
Cross-disciplinary physics: materials science
rheology
Dielectric constant
Dielectric losses
Exact sciences and technology
Ferrites
Frequency
Iron
Low frequencies
Magnetic materials
Magnetic permeability
Magnetic properties
Magnetism
Materials science
Other topics in materials science
Permeability
Permittivity
Physics
Powders
Zinc
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Summary:Composites based on ferrite powders Ni 0.95-x ZnxCo 0.05 Fe 1.90 Mn 0.02 O 4 with x=0-0.25, with a volume concentration of 50%, were fabricated and characterized. Dielectric and magnetic properties of the composites were measured over 0.01-16.5 GHz. The permeability of the composites at low frequency increases from ~4.18 to ~7.85 as the contribution of Zn is increased from x=0 to x=0.25, while the permittivity remains almost unchanged with x. The composites based on the ferrite powders with Zn of x=0.10-0.25 have almost equal values of epsiv' and mu' at low frequency (
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2006.886321