Optimization of synthesis conditions and the study of magnetic and dielectric properties for MgFe2O4 ferrite |
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| Authors: | Alin C. Druc Anca M. Dumitrescu Adrian I. Borhan Valentin Nica Alexandra R. Iordan Mircea N. Palamaru |
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| Affiliation: | 1. Faculty of Chemistry, Alexandru Ioan Cuza University of Iasi, Iasi, 700506, Romania
2. Faculty of Physics, Alexandru Ioan Cuza University of Iasi, Iasi, 700506, Romania
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| Abstract: | Nano-sized magnesium ferrites were synthesized by the sol-gel auto-combustion method using a variety of chelating/combustion agents: tartaric acid, citric acid, cellulose, glycine, urea and hexamethylenetetramine. The original purpose of this work was the synthesis of nano-sized magnesium ferrite by using, for the first time, cellulose and hexamethylenetetramine as chelating/combustion agents. Synthesized samples were subjected to different heat treatments at 773 K, 973 K and, respectively 1173 K in air. The disappearance of the organic phase and nitrate phase with the spinel structure formation was monitored by infrared absorption spectroscopy. Spinel structure, crystallite size and cation distribution were evaluated by X-ray diffraction data. The morphology of as-prepared powders was studied using scanning electron microscopy. The magnetic and dielectric properties were studied for the obtained samples.  | |
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