Alkali, Chalcogen, Non-disordered, Transitional, Phonons, Trigonal

• Li-Nb-O
• Fe-K-Mo-O
• Li-O-Ta
• Na-O-P-Zr
• Co-Li-O
• infrared spectra
• wavenumber of optical phonon
• Raman spectra
• vibrational spectra
• wavenumber of longitudinal optical phonon
• non-disordered
• transitional
• alkali
• chalcogen
• ternary