Critical behaviour and magnetic properties of A-B spinel ZnxCu1−xFe2O4 |
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| Authors: | O. Mounkachi M. Belaiche A. Benyoussef M. Sajieddine |
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| Affiliation: | a Institute of Nanomaterials and Nanotechnology, MAScIR, Rabat, Moroccob Hassan II Academy of Science and Technology, Rabat, Moroccoc LMPHE, associé au CNRST (URAC), Faculté des Sciences, Université Mohammed V, Rabat, Moroccod Laboratoire de Magnétisme, Matériaux Magnétiques, Microonde et Céramique, Ecole Normale Supérieure, B.P. 9235, Océan, Rabat, Moroccoe Faculté des Sciences et Techniques, Université Moulay Slimane, Beni Mellal, Morocco |
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| Abstract: | ![]()
Polycrystalline Zn0.6Cu0.4Fe2O4 ferrites have been prepared using a solid-state reaction technique. Their structural and magnetic properties have been studied, using X-ray diffraction and Mössbauer and magnetic measurements. These results have been compared to a more general theoretical study, on ZnxCu1−xFe2O4, based on mean field theory and high-temperature series expansions (HTSE), and extrapolated with the Padé approximant method. The nearest neighbour super-exchange interactions for the intra-site and the inter-site of ZnxCu1−xFe2O4 spinel ferrites, in the range 0≤x≤1, have been computed using the probability approach, based on Mössbauer data. The Curie temperature TC is calculated as a function of Zn concentration. The theoretical results obtained are in good agreement with the experimental results obtained by magnetic measurements. |
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| Keywords: | A. Ferrites C. Mö ssbauer spectra C. Magnetic measurements D. Super-exchange interactions |
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