STRUCTURAL ELUCIDATION OF SINTERED CARBONATE-CONTAINING HYDROXYAPATITES BY FT-RAMAN SPECTROSCOPY

抄録

Hydroxyapatites (HAPs) containing carbonate were sintered between 400 and 1200°C, and the sintered HAPs were analyzed by FT-Raman spectroscopy to give the spectra indicating typical four phosphate bands ν₁(PO₄)-ν₄(PO₄), OH translation ν₅, notable bands ν₆-ν₈ in lattice modes, and several combination bands. The band intensities of ν₂(PO₄)+ν₅ and ν₁(PO₄), and these intensity ratio R_cp values were changed according to the carbonated types in the HAPs. From these results, we conclude that the changes in Raman intensities possibly reflect the particle growth and volume shrinkage in the HAPs. The present Raman study may be applied to structural elucidation study of other substituted apatites such as fluorinated and magnesium apatites as well as forensic study.