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Title: Synthesis of sodium-zinc spinel ferrites
Author: Vallet Regí, María
Parras Vázquez, Marina
Obradors, Xavier
Pernet, Michel
Rodríguez, J.
Joubert, J.
Keywords: Propietats magnètiques
Materials ferromagnètics
Ferromagnetic materials
Magnetic properties
Issue Date: 1984
Publisher: IEEE
Abstract: 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.
Note: Reproducció del document publicat a
It is part of: IEEE Transactions on Magnetics, 1984, vol. 20, núm. 5, p. 1515-1517.
ISSN: 0018-9464
Appears in Collections:Articles publicats en revistes (Física de la Matèria Condensada)

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