High-frequency permeability and permittivity of NixZn(1-x)Fe2O4 thick film

Magnetic materials such as NixZn(1-x)Fe2O4 have resonant frequency in high frequency; therefore, they are more useful especially in microwaves. The NixZn(1-x)Fe2O4 was prepared by the chemical coprecipitation method using citrate precursors, and the fritless thick film was screen printed on alumina...

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Veröffentlicht in:	Journal of magnetism and magnetic materials 2008-06, Vol.320 (12), p.1844-1848
Hauptverfasser:	KULKARNI, D. C, LONKAR, U. B, PURI, Vijaya
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Dielectric properties of solids and liquids Dielectrics, piezoelectrics, and ferroelectrics and their properties Domain effects, magnetization curves, and hysteresis Exact sciences and technology Magnetic properties and materials Magnetization curves, magnetization reversal, hysteresis, barkhausen and related effects Microwave and radio-frequency interactions (excluding resonances) Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Other interactions of matter with particles and radiation Permittivity (dielectric function) Physics
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Zusammenfassung:	Magnetic materials such as NixZn(1-x)Fe2O4 have resonant frequency in high frequency; therefore, they are more useful especially in microwaves. The NixZn(1-x)Fe2O4 was prepared by the chemical coprecipitation method using citrate precursors, and the fritless thick film was screen printed on alumina substrates. The composition-dependent permeability and permittivity in the high frequency 8-12 GHz are investigated. Using the overlay technique on Ag-thick-film patch antenna, the change in reflectance and transmittance has been measured. The NixZn(1-x)Fe2O4 thick film, when used as overlay on Ag-thick-film patch antenna, changes the resonance characteristics. The changes in resonance frequency, reflectance and transmittance have been used to calculate the permeability and permittivity of the thick film. Zinc-concentration-dependent changes are obtained.
ISSN:	0304-8853
DOI:	10.1016/j.jmmm.2008.02.110