Alkali, Chalcogen, Phonons, Tetragonal

• Fe-K-Se
• Bi-Na-O-W
• Ce-Li-Mo-O
• La-Na-O-Ti
• H-K-O-P
• Raman spectra
• wavenumber of optical phonon
• infrared spectra
• vibrational spectra
• wavenumber of longitudinal optical phonon
• alkali
• chalcogen
• transitional
• disordered
• non-disordered