Alkali, Chalcogen, Disordered, Transitional, Phonons, Trigonal

• Li-Nb-O
• Bi-Na-O-Ti
• Li-O-Ta
• La-Na-O-Ti
• Na-O-P-Zr
• Raman spectra
• wavenumber of optical phonon
• infrared spectra
• vibrational spectra
• wavenumber of longitudinal optical phonon
• disordered
• transitional
• alkali
• chalcogen
• oxide