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Characterization of a calcium phospho-silicated apatite with iron oxide inclusions

Desport, Barthélémy and Carpena, Joëlle and Lacout, Jean-Louis and Borschneck, Daniel and Gattacceca, Jérôme Characterization of a calcium phospho-silicated apatite with iron oxide inclusions. (2011) Journal of Crystal Growth, vol. 316 (n° 1). pp. 164-171. ISSN 0022-0248

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Official URL: http://dx.doi.org/10.1016/j.jcrysgro.2010.12.054

Abstract

An iron oxide containing calcium phosphate–silicate hydroxyapatite was synthesized by calcination at 900 °C of a sample obtained by precipitation in basic aqueous solution of Ca, P, Si, Fe and Mg containing acidic solution made from dissolution of natural minerals. XRD and FTIR were used for crystallographic characterization of the main apatitic phase. Its composition was determined using ICP-AES. EDX coupled with SEM and TEM evidenced the heterogeneity of this compound and the existence of iron–magnesium oxide. Magnetic analyses highlighted that this phase was non-stoichiometric magnesioferrite (Mg1.2Fe1.8O3.9) spherical nanoparticles. Those analyses also put into evidence the role of calcination in synthesis. Carbonates detected by FTIR and estimated by SEM-EDX in non-calcinated sample were removed from apatitic structure, and crystallization of apatite was enhanced during heating. Moreover, there was phase segregation that led to magnesioferrite formation.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Journal of Crystal Growth : http://www.sciencedirect.com/science/journal/00220248
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Other partners > Collège de France (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
French research institutions > Institut de Recherche pour le Développement - IRD
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Other partners > Université de Provence - Aix-Marseille I (FRANCE)
Other partners > Université Paul Cézanne - Aix-Marseille III (FRANCE)
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Deposited By: Leila Abdelouhab
Deposited On:07 Apr 2011 13:57

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