Carbonate, Chalcogen, Rare earth, Hexagonal, Optical properties

• C-H-O-Pr
• C-H-La-O
• C-Eu-Gd-O
• C-H-Ho-O
• C-Er-H-O
• phonons
• luminescence
• wavenumber of optical phonon
• photoluminescence spectra
• Raman spectra
• rare earth
• carbonate
• chalcogen
• lanthanoid
• quaternary