Abstract
Ni–Zn ferrites were prepared in air by using the conventional ceramic powder methodology. The compositions analysed belong to the type NixZn1−xFe2O4 ferrites, with x ranging from 0.3–0.4. Copper wire was coiled round the specimens, previously pressed to a toroidal shape, to characterize their magnetic properties as a function of the frequency of the applied electric field. Powder X-ray diffraction, scanning electron microscopy and microanalysis, and the magnetic susceptibility of the ferrites, were studied, indicating that the highest permeability is achieved at the composition x = 0.3, a result which is correlated to the microstructural characterization. The Curie temperature was also determined to range from 60–130 °C, depending on the specific composition.
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Rosales, M.I., Cuautle, M.P. & Castano, V.M. Microstructure and magnetic properties of Ni–Zn ferrites. Journal of Materials Science 33, 3665–3669 (1998). https://doi.org/10.1023/A:1004671732746
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DOI: https://doi.org/10.1023/A:1004671732746