Alkaline, Oxide, Kim, Optical properties, Tetragonal

• Ba-O-Ti
• Ir-O-Sr
• O-Ru-Sr
• O-Rh-Sr
• Ba-La-O-Ti
• optical spectra
• luminescence
• phonons
• optical conductivity
• wavelength for luminescence
• oxide
• alkaline
• chalcogen
• transitional
• disordered