Apatite, Chalcogen, Disordered, Orthophosphate, Pnictogen, Phonons

• Ca-H-O-P
• C-Ca-F-O-P
• Bi-Ca-O-P
• Ca-F-O-P
• C-Ca-H-O-P
• infrared spectra
• wavenumber of optical phonon
• Raman spectra
• vibrational spectra
• wavenumber of longitudinal optical phonon
• disordered
• orthophosphate
• apatite
• chalcogen
• pnictogen
• hexagonal
• monoclinic
• trigonal