Birefringent, Chalcogen, Non-disordered, Phonons

• Li-Nb-O
• Cs-H-O-S
• I-S-Sb
• B-Cu-O
• Ag-Ga-S
• Raman spectra
• wavenumber of optical phonon
• infrared spectra
• vibrational spectra
• Brillouin spectra
• chalcogen
• non-disordered
• birefringent
• nonmetal
• transitional
• orthorhombic
• trigonal
• tetragonal
• monoclinic
• hexagonal