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X-ray powder data and bond valence of La0.65Sr0.35MnO3 after Rietveld refinement

Published online by Cambridge University Press:  05 March 2012

C. O. Paiva-Santos ,
R. F. C. Marques ,
M. Jafelicci Jr.  and
L. C. Varanda
C. O. Paiva-Santos*
Affiliation:
Laboratório Computacional de Análises Cristalográficas e Cristalinas-LabCACC, Instituto de Química, UNESP, 14800-900 Araraquara, R. Prof. Francisco Degni s/n, Brazil
R. F. C. Marques
Affiliation:
Instituto de Química-UNESP, 14800-900 Araraquara, R. Prof. Francisco Degni s/n, Brazil
M. Jafelicci Jr.
Affiliation:
Instituto de Química-UNESP, 14800-900 Araraquara, R. Prof. Francisco Degni s/n, Brazil
L. C. Varanda
Affiliation:
Instituto de Química-UNESP, 14800-900 Araraquara, R. Prof. Francisco Degni s/n, Brazil
*
a) Electronic mail: [email protected]
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Abstract

Powder X-ray diffraction (XRD) data were collected for La0.65Sr0.35MnO3 prepared through an alternative method from a stoichiometric mixture of Mn2O3, La2O3, and SrO2, fired at 1300 °C for 16 h. XRD analysis using the Rietveld method was carried out and it was found that manganite has rhombohedral symmetry (space group R3c). The lattice parameters are found to be a=5.5032 Å and c=13.3674 Å. The bond valence computation indicates that the initial inclusion of Sr occurs at higher temperature.

Keywords

manganiteX-ray diffractionRietveld methodperovskitebond valence
Type
New Diffraction Data
Information
Powder Diffraction , Volume 17 , Issue 2 , June 2002 , pp. 149 - 152
Copyright
Copyright © Cambridge University Press 2005

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