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...
Guardado en:
| Autores principales: | , , |
|---|---|
| Formato: | Articulo |
| Lenguaje: | Alemán |
| Publicado: |
1986
|
| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/120780 |
| Aporte de: |
| Sumario: | 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. |
|---|