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Advances in the Low Temperature Preparation and Structural Characterization of Lanthanum Strontium Manganite Powder

Published online by Cambridge University Press:  21 March 2011

Sophie Guillemet-Fritsch ,
Hervé Coradin ,
Antoine Barnabé ,
Christophe Calmet ,
Philippe Tailhades  and
Abel Rousset
Sophie Guillemet-Fritsch
Affiliation:
Centre Inter-universitaire de Recherche et d'Ingénierie des Matériaux (CIRIMAT)/ UMR CNRS 5085, LCMIE, Université Paul Sabatier, Bât. 2R1-118, Route de Narbonne 31062, Toulouse Cedex, France
Hervé Coradin
Affiliation:
Centre Inter-universitaire de Recherche et d'Ingénierie des Matériaux (CIRIMAT)/ UMR CNRS 5085, LCMIE, Université Paul Sabatier, Bât. 2R1-118, Route de Narbonne 31062, Toulouse Cedex, France
Antoine Barnabé
Affiliation:
Centre Inter-universitaire de Recherche et d'Ingénierie des Matériaux (CIRIMAT)/ UMR CNRS 5085, LCMIE, Université Paul Sabatier, Bât. 2R1-118, Route de Narbonne 31062, Toulouse Cedex, France
Christophe Calmet
Affiliation:
Centre Inter-universitaire de Recherche et d'Ingénierie des Matériaux (CIRIMAT)/ UMR CNRS 5085, LCMIE, Université Paul Sabatier, Bât. 2R1-118, Route de Narbonne 31062, Toulouse Cedex, France
Philippe Tailhades
Affiliation:
Centre Inter-universitaire de Recherche et d'Ingénierie des Matériaux (CIRIMAT)/ UMR CNRS 5085, LCMIE, Université Paul Sabatier, Bât. 2R1-118, Route de Narbonne 31062, Toulouse Cedex, France
Abel Rousset
Affiliation:
Centre Inter-universitaire de Recherche et d'Ingénierie des Matériaux (CIRIMAT)/ UMR CNRS 5085, LCMIE, Université Paul Sabatier, Bât. 2R1-118, Route de Narbonne 31062, Toulouse Cedex, France
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Abstract

Perovskite oxides of formula La1−xSrxMnO3 have been obtained by the thermal decomposition of precursor powders. Two different kinds of precursors, carbonates and citrates have been prepared by low temperature, i.e., “chimie douce” technique. The careful control of the chemical and the hydrodynamic parameters during the synthesis process allows obtaining nice homogeneous and small size particles (80 nm for the ex-carbonates and 30 nm for ex-citrates). Pure perovskite phase is observed after a low temperature thermal treatment, from 550 °C. The structure of these oxides is either rhombohedral or cubic and depends on the strontium content, the temperature and the partial pressure of oxygen during the thermal treatment. The Mn-O distances and the Mn-O-Mn angles are directly related to the amount of Mn4+ content.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 674: Symposia T/U/V – Applications of Ferromagnetic and Optical Materials, Storage and Magnetoelectronics , 2001 , U3.3
Copyright
Copyright © Materials Research Society 2001

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References

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