| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Grenèche, Jean-Marc
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2023Influence of Nd Substitution on the Phase Constitution in (Zr,Ce)Fe10Si2 Alloys with the ThMn12 Structurecitations
- 2018Exchange-Biased Fe 3− x O 4 -CoO Granular Composites of Different Morphologies Prepared by Seed-Mediated Growth in Polyol: From Core-Shell to Multicore Embedded Structurescitations
- 2017Atomic scale modeling of iron-doped biphasic calcium phosphate bioceramicscitations
- 2016Structural behavior of laser-irradiated γ-Fe 2 O 3 nanocrystals dispersed in porous silica matrix : γ-Fe 2 O 3 to α-Fe 2 O 3 phase transition and formation of ε-Fe 2 O 3citations
- 2016New iron tetrazolate frameworks : synthesis temperature effect, thermal behaviour, Mössbauer and magnetic studiescitations
- 2015Structural investigations of iron oxynitride multilayered films obtained by reactive gas pulsing processcitations
- 2015New iron tetrazolate frameworkscitations
- 2015New iron tetrazolate frameworks:synthesis temperature effect, thermal behaviour, Mössbauer and magnetic studiescitations
- 2014Magnetic Iron Oxide Nanoparticles: Reproducible Tuning of the Size and Nanosized-Dependent Composition, Defects, and Spin Cantingcitations
- 2014Exchange-biased oxide-based core-shell nanoparticles produced by seed-mediated growth in polyolcitations
- 2013Isomorphous Substitution in a Flexible Metal–Organic Framework: Mixed-Metal, Mixed-Valent MIL-53 Type Materialscitations
- 2012Insights into the Mechanism Related to the Phase Transition from γ-Fe2O3 to α-Fe2O3 Nanoparticles Induced by Thermal Treatment and Laser Irradiationcitations
- 2012Development of new anodes compatible with the solid oxide fuel cell electrolyte BaIn0.3Ti0.7O2.85citations
- 2004The titration of clay minerals I. Discontinuous backtitration technique combined with CEC measurements.citations
- 2000Microstructural and magnetic properties of Fe/Cr-substituted ferrite compositescitations
Places of action
| Organizations | Location | People |
|---|
article
Atomic scale modeling of iron-doped biphasic calcium phosphate bioceramics
Abstract
International audience ; Biphasic Calcium Phosphates (BCP) are bioceramics composed of hydroxyapatite (HAp, Ca 10 (PO 4) 6 (OH) 2) and beta-Tricalcium Phosphate (-TCP, Ca 3 (PO 4) 2). Because their chemical and mineral composition closely resembles that of the mineral component of bone, they are potentially interesting candidates for bone repair surgery, and doping can advantageously be used to improve their biological behavior. However, it is important to describe the doping mechanism of BCP thoroughly in order to be able to master its synthesis and then to fully appraise the benefit of the doping process. In the present paper we describe the ferric doping mechanism: the crystallographic description of our samples, sintered at between 500°C and 1100°C, was provided by Rietveld analyses on X-ray powder diffraction, and the results were confirmed using X-ray absorption spectroscopy and 57 Fe Mössbauer spectrometry. The mechanism is temperature-dependent, like the previously reported zinc doping mechanism. Doping was performed on the HAp phase, at high temperature only, by an insertion mechanism. The Fe 3+ interstitial site is located in the HAp hexagonal channel, shifted from its centre to form a triangular threefold coordination. At lower temperatures, the Fe 3+ are located at the centre of the channel, forming linear twofold coordinated O-Fe-O entities. The knowledge of the doping mechanism is a prerequisite for a correct synthesis of the targeted bioceramic with the adapted (Ca=Fe)/P ratio, and so to be able to correctly predict its potential iron release or magnetic properties.