Alkaline, Chalcogen, Disordered, Transitional, Hexagonal, Phonons

• Ba-Fe-O
• Fe-O-Sr
• Ba-Co-Fe-O-Sr
• Be-Mg-O-Zn
• Mg-O-Zn
• wavenumber of optical phonon
• infrared spectra
• Raman spectra
• vibrational spectra
• wavenumber of longitudinal optical phonon
• transitional
• disordered
• alkaline
• chalcogen
• oxide