Chalcogen, Oxide, Kim, Optical properties, Tetragonal

• Ba-O-Ti
• Ir-O-Sr
• Ir-O
• O-Rh-Sr
• O-Ru-Sr
• phonons
• optical spectra
• luminescence
• wavenumber of optical phonon
• optical conductivity
• oxide
• chalcogen
• transitional
• disordered
• non-disordered