Kristallographisches und spektroskopisches Verhalten einiger gemischter Phosphat/Vanadat-Fluoroapatite
Crystallographic data for mixed phosphate/vanadate fluoroapatites of the type M₁₀(P0₄)₆₋ₓ(V0₄)ₓF₂ (with M = Ca, Sr, Ba and x = 1-3) have been obtained from X-ray powder data. The only structural effect observed is a continuous increase of unit cell dimensions with increased vanadate incorporation. T...
| Autores: | , , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 1986 |
| País: | Argentina |
| Recursos: | Universidad Nacional de La Plata |
| Repositorio: | SEDICI (UNLP) |
| Idioma: | indefinido |
| OAI Identifier: | oai:sedici.unlp.edu.ar:10915/120780 |
| Acesso em linha: | http://sedici.unlp.edu.ar/handle/10915/120780 |
| Access Level: | acceso abierto |
| Palavra-chave: | Química Mixed apatites Crystal data IR spectra Raman spectra |
| Resumo: | Crystallographic data for mixed phosphate/vanadate fluoroapatites of the type M₁₀(P0₄)₆₋ₓ(V0₄)ₓF₂ (with M = Ca, Sr, Ba and x = 1-3) have been obtained from X-ray powder data. The only structural effect observed is a continuous increase of unit cell dimensions with increased vanadate incorporation. The IR and Raman spectra show that the V0₄³⁻ incorporation has a negligible effect on the strength of the P-O bonds, although a small bond weakening for both tetrahedral oxoanions is observed as the unit cell volum e increases. The results are comparable to those reported earlier for similar mixed hydroxyapatites and suggest that the fluoroapatite lattice can be considered as a good “model” for the vertebrate hard tissues. |
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