Infrared and Raman microspectrometry study of fluor-fluor-hydroxy and hydroxy-apatite powders.

摘要: Visible Raman and infrared microspectrometry studies performed on fluorapatite hydroxyapatite powders have shown similar results. Small modifications of the ν2 ν4 PO3-4 tetrahedra bending modes are observed. A small frequency shift ν1 mode ν3 region accompanied with a simplification respective spectra from seven to four bands were broad weak band which could be attributed Ca–F bond is detected at 311 cm-1 spectra. The phosphate vibration little disturbed by fluoride substitution. This indicate that groups interact strongly between themselves weakly substituted atoms (i.e. hydroxyle atoms). Whatever crystallographic model considered, number observed always lower than calculated ones, even for hydroxyapatite, whose symmetry fluorapatite.