Title:
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Synthesis of sodium-zinc spinel ferrites
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Author:
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Vallet Regí, María; Parras Vázquez, Marina; Obradors, Xavier; Pernet, Michel; Rodríguez, J.; Joubert, J.
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Other authors:
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Universitat de Barcelona |
Abstract:
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The synthesis of spinel ferrites with composition Zn1-2xNaxFe2+xO4has been performed and the composition range in which single phase samples are obtained has been defined. The characterization of the samples has been carried out from atomic absorption and X-ray fluorescence analyses, X-ray diffraction patterns, Mössbauer spectroscopy and thermomagnetic measurements. It is show that significant loss of Na does exist when the synthesis is performed at high temperatures. When the Na volatilization is avoided spinel oxides with Na content up to 0.25 atoms per unit formula can be obtained. In this case the increase of the interatomic distances leads to differing fundamental magnetic properties as compared to the equivalent lithium-zinc ferrites. |
Subject(s):
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-Propietats magnètiques -Materials ferromagnètics -Ferromagnetic materials -Magnetic properties |
Rights:
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(c) IEEE, 1984
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Document type:
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Article Article - Published version |
Published by:
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IEEE
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