MAGNETIC SPECTRA ANALYSIS OF DIELECTRICS

Jozef Sláma – Martin Šoka – Anna Grusková – Vladimír Jančárik
– Vladimír Ďurman – Peter Široký – Rastislav Dosoudil

   Method of dielectric and magnetic spectroscopy is used to analyze and interpret the spectra obtained by measurement of complex permittivity of Ba_1-xSr_x ferrites and permeability of substituted Ni ferrite and NiZn ferritepolymers. Ferritepolymers were prepared from NiZn ferrite particles dispersed in PVC polymer matrix. Effect of the filler content on the μ^*(f) spectra of NiZn ferritepolymers was examined and discussed from point of view the magnetization processed in samples. In Ba_0.25Sr_0.75 ferrite was finding two dielectric dispersion and absorption permittivity behavior as suggested by Maxwell-Wagner effect.

Keywords: permeability, permittivity, ferrite, ferritepolymer

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