Alkali, Chalcogen, Conductor, Disordered, Phonons, Trigonal

• Li-Nb-O
• Bi-Na-O-Ti
• Li-O-Ta
• Li-Na-Nb-O
• Co-Li-O
• Raman spectra
• wavenumber of optical phonon
• vibrational spectra
• infrared spectra
• wavenumber of longitudinal optical phonon
• disordered
• alkali
• conductor
• chalcogen
• transitional