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Indexing of the Powder Diffraction Pattern of Yttrium Oxalate Dihydrate

Published online by Cambridge University Press:  10 January 2013

D. Louër ,
F. Deneuve  and
F. Ecochard
D. Louër
Affiliation:
Laboratoire de Cristallochimie (URA 254), Université de Rennes I, Avenue du Général Leclerc, 35042 Rennes cedex, France.
F. Deneuve
Affiliation:
Rhône Poulenc Recherches, 52 rue de la Haie Coq, 93308 Aubervilliers cedex, France.
F. Ecochard
Affiliation:
Rhône Poulenc Recherches, 52 rue de la Haie Coq, 93308 Aubervilliers cedex, France.
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Abstract

Yttrium oxalate dihydrate, Y2(C2O4)3.2H2O, has been investigated by means of X-ray powder diffraction. Unit cell dimensions were determined by an indexing program based on the variation of parameters by successive dichotomies. The diffractometer data were collected with strictly monochromatic radiation. A monoclinic cell was found: a=9.3811(8)Å, b=11.6385(15)Å, c=5.9726(7)Å, β=96.079(8)°, which is characterized by the figures of merit M20=87 and F30=112 (0.0065,41). A preliminary analysis of the anisotropic line broadening has revealed some microstructural properties. It is shown that line broadening is mainly due to a micro-strain effect.

Type
Research Article
Information
Powder Diffraction , Volume 5 , Issue 2 , June 1990 , pp. 104 - 105
Copyright
Copyright © Cambridge University Press 1990

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References

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