Kim, Optical properties, Oxide, Quaternary, Tetragonal

• K-Li-Nb-O
• La-Na-O-Ti
• Na-Nd-O-Ti
• Ba-La-O-Ti
• Gd-Na-O-Ti
• phonons
• wavenumber of optical phonon
• luminescence
• optical spectra
• wavelength for luminescence
• quaternary
• chalcogen
• oxide
• transitional
• rare earth