Kim, Optical properties, Quaternary, Tetragonal

• As-Ba-Co-Fe
• K-Li-Nb-O
• Na-Nd-O-Ti
• La-Na-O-Ti
• Ba-La-O-Ti
• phonons
• optical spectra
• luminescence
• wavenumber of optical phonon
• optical absorption
• quaternary
• transitional
• chalcogen
• oxide
• disordered