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Title: Heat treatment effects on microstructure and magnetic properties of Mg–Zn ferrite prepared by Conventional ceramic method

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Title:
Heat treatment effects on microstructure and magnetic properties of Mg–Zn ferrite prepared by Conventional ceramic method
Author Name:
Kadhum. J. K. and atheer. I. A.
Abstract:
Fabricationof Mg1-XZnXFe2O4(where x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0), samples using aConventional ceramic method is prepared. Oxides of magnesium, zinc and iron with purity of about 99.99%were mixed with distilled water this mixture was dried in furnace at 150 ºC for 4 h. By using theElectricgrinder for three minutes then ball milling machine for six hours the dried mixtures are ground to a fine powder.By using thesievefine we got on fine particleswith diameters (20) µm. The fine powder was pre-sintered (calcined) at 950ºC for 4 h and sintered at 1000°C, 1050°C and 1100°C. The magnetic and the crystal structure of the preparedSamples were identified using Microwave Measurement,X-Ray Diffraction analysis and scanning electron microscope (SEM). The X-ray diffraction analysis showed major peak at plane (3 1 1) of the cubic structure for all the ferrites. The largest value of density achieved was (4.375 gm.cm-3). Reflectance coefficient (S11) and transmission coefficient (S21), has measured using network analyzer device then the attenuation coefficient and absorbance were calculated at the X-band range (8-12.5 GHz),The SEM micrographs shows the uniform distribution of the particles.
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