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Descripción
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| Abstract: The thermal evolution of the Zn-Mn-O system in air was studied by X-ray diffraction, transmission electron microscopy-energy dispersive spectroscopy and electron energy loss spectroscopy. The obtained results suggest that this evolution involves the formation of different Mn3-xZnxO4 spinel-type phases. With increasing temperature these spinels experience phase transformations which are found to be induced by the Mn(IV) to Mn(III) reduction process. This last cation is an active Jahn-Teller ion which leads to an appreciable distortion of the Mn3-xZnxO4 spinel structure, from a cubic symmetry at low temperatures to highly distorted tetragonal symmetries at high temperatures. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. | |
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Internacional
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Si |
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JCR del ISI
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Si |
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Título de la revista
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ACTA MATERIALIA |
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ISSN
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1359-6454 |
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Factor de impacto JCR
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3,624 |
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Información de impacto
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Volumen
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56 |
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DOI
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10.1016/j.actamat.2008.04.024 |
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Número de revista
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15 |
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Desde la página
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4028 |
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Hasta la página
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4035 |
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Mes
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ENERO |
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Ranking
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