Chalcogen, Oxide, Quaternary, Rare earth, Transitional, Kim, Phonons

• Ba-Cu-O-Y
• La-Li-O-Si
• Na-Nd-O-Ti
• La-Na-O-Ti
• Gd-Na-O-Ti
• wavenumber of optical phonon
• Raman spectra
• infrared spectra
• wavenumber of transverse optical phonon
• wavenumber of longitudinal optical phonon
• rare earth
• quaternary
• oxide
• chalcogen
• transitional
• tetragonal
• orthorhombic
• hexagonal
• cubic
• trigonal