Nature of some features in Raman spectra of hydroxyapatite‐containing materials

A very broad vibrational band ranging from 1000 up to 4000 cm⁻¹ and two relatively sharp bands at 5000 and 5027 cm⁻¹ are found in the Raman scattering spectrum of hydroxyapatite‐containing films obtained by gas detonation spray method. We developed a theoretical model that interprets the broad band as a result of strong interaction between the high‐frequency hydrogen bond vibrations and lattice phonons. Both sharp bands around 5000 cm⁻¹ are assigned to the overtones of v‐OH vibrations. Copyright © 2016 John Wiley & Sons, Ltd.