Birefringent, Chalcogen, Nonmetal, Optical properties, Tetragonal

• Ag-Ga-S
• O-V-Y
• B-Cu-O
• Al-La-O-Sr
• Nd-O-V-Y
• luminescence
• refractive index
• phonons
• optical absorption
• values of luminescence
• birefringent
• chalcogen
• nonmetal
• transitional
• non-disordered