Alkali, Chalcogen, Quaternary, Transitional, Phonons, Tetragonal

• Bi-Na-O-W
• Ce-Li-Mo-O
• La-Na-O-Ti
• Bi-Na-O-Ti
• Na-Nd-O-Ti
• wavenumber of optical phonon
• Raman spectra
• infrared spectra
• wavenumber of longitudinal optical phonon
• vibrational spectra
• transitional
• alkali
• quaternary
• chalcogen
• oxide