Numéro
J. Phys. IV France
Volume 123, March 2005
Page(s) 251 - 254
DOI https://doi.org/10.1051/jp4:2005123045


J. Phys. IV France 123 (2005) 251-254

DOI: 10.1051/jp4:2005123045

X-ray diffraction study of cadmium hydroxyapatite

A. Nounah1, N. Maroufi2, Y. Ait Ichou2, J.L. Lacout3 and J.M. Savariault4

1  Laboratoire des Sciences de l'Environnement, École Supérieure de Technologie, Av. Prince Héritier Sidi Mohammed, BP. 227, Salé Médina, Maroc
2  Équipe de Photocatalyse et Environnement, Département de Chimie, BP. 8106, Faculté des Sciences, Agadir, Maroc
3  Laboratoire de Physico-Chimie des Phosphates, CIRIMAT - UMR CNRS 5080, ENCIACET-INPT, 118 route de Narbonne, 31077 Toulouse, France
4  Centre d'Élaboration de Matériaux et d'Études Structurales, CNRS, 29 rue Jeanne Marvig, 31055 Toulouse, France


Abstract
Solid solutions of cadmium and calcium hydroxyapatite [ Ca $_{10-{\rm x}}$Cd$_{\rm x}$(PO4)6(OH)2 (0 $\le $ x $\le $ 10)] were synthesized by a wet process in a basic medium. The lattice dimensions of these compounds vary linearly with the atom percent cadmium. The distribution of the calcium and cadmium ions between two non-equivalent crystallographic sites, (1) and (2), were determined by the Rietveld method. The site-occupancy factors of atoms indicate a slight preference of cadmium for site (2) in the apatite structure.



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