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Structural study of room temperature synthesized nickel thiophosphate a–NiPS3

Published online by Cambridge University Press:  31 January 2011

P. Fragnaud ,
E. Prouzet  and
R. Brec
P. Fragnaud
Affiliation:
Laboratoire de Chimie des Solides, IMN, CNRS UMR 110, 2 rue de la Houssinière, 44072, Nantes Cédex 03, France
E. Prouzet
Affiliation:
Laboratoire de Chimie des Solides, IMN, CNRS UMR 110, 2 rue de la Houssinière, 44072, Nantes Cédex 03, France
R. Brec
Affiliation:
Laboratoire de Chimie des Solides, IMN, CNRS UMR 110, 2 rue de la Houssinière, 44072, Nantes Cédex 03, France
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Abstract

A structural study using x-ray diffraction and simulation calculations was performed on a–NiPS3, the highly disordered phase of the nickel thiophosphate, synthesized through a soft chemistry process. The structure of the wet gel is shown to be entirely amorphous; its x-ray pattern exhibits diffusion peaks according to the disordered anionic network. For the powdered samples, measurements of the width of the diffraction lines show that there are small crystallized c–NiPS3-type crystallites with a volume V equal to (25 × 25 × 40) Å3 (i.e., 4a × 3b × 6c in terms of volume cell). The simulation calculations of the x-ray diagrams have indicated that the stacking of these crystallites is quite imperfect: the suggested crystallite structures must contain rotated or shifted layers.

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Articles
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Journal of Materials Research , Volume 7 , Issue 7 , July 1992 , pp. 1839 - 1846
Copyright
Copyright © Materials Research Society 1992

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