抄録
Raman spectra of hydroxyapatite have been successfully obtained at temperatures from 25°C to 1200°C in air by using a new system of ultraviolet (UV) Raman spectroscopy. The intensity of a band ascribed to the stretching vibration of the OH ion continuously decreased with increasing temperature, moreover additional bands appeared in the vicinity of the original band. The total intensity of these bands did not change significantly up to about 800°C, whereas they decreased at temperatures higher than about 800°C. This result can be interpreted as producing oxy-hydroxyapatite due to dehydration of hydroxyapatite over 800°C.
