Chalcogen, Transitional, Phonons, Trigonal

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