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Neutron powder diffraction data for low- and high-temperature NASICON phases of LiM2(PO4)3 (M=Hf, Sn)

Published online by Cambridge University Press:  10 January 2013

E. Morin
Affiliation:
Laboratoire de Cristallochimie du Solide, Université P. et M. Curie, 75252 Paris Cedex 05, France
T. Le Mercier
Affiliation:
Laboratoire de Cristallochimie du Solide, Université P. et M. Curie, 75252 Paris Cedex 05, France
M. Quarton
Affiliation:
Laboratoire de Cristallochimie du Solide, Université P. et M. Curie, 75252 Paris Cedex 05, France
E. R. Losilla
Affiliation:
Departamento de Química Inorgánica, Universidad de Málaga, Aptd 59, 29071 Málaga, Spain
M. A. G. Aranda
Affiliation:
Departamento de Química Inorgánica, Universidad de Málaga, Aptd 59, 29071 Málaga, Spain
S. Bruque
Affiliation:
Departamento de Química Inorgánica, Universidad de Málaga, Aptd 59, 29071 Málaga, Spain

Abstract

The new diffraction patterns of the low- and high-temperature phases of Li0.87Hf2.032(PO4)3 and LiSn2(PO4)3 are given and indexed on the basis of a structure refinement from neutron powder data using Rietveld method. The two isotypic compounds present a reversible phase transition: triclinic (LT, space group P1¯) ⇄ rhombohedral (HT, space group Rc) which proceeds by topotactic distortion of the structural skeleton.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1999

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