Optical properties, Quaternary, Transitional, Zaacab

• Co-H-I-O
• Br-Cr-O-P
• H-I-Ni-O
• Cr-I-O-P
• Bi-Cu-I-Se
• phonons
• Raman spectra
• infrared spectra
• optical absorption
• wavenumber of optical phonon
• transitional
• quaternary
• chalcogen
• non-disordered
• halogen
• monoclinic
• tetragonal
• trigonal
• orthorhombic
• triclinic