Chalcogen, Conductor, Metal, Fe, Phonons, Trigonal

• Bi-Fe-O
• Fe-O
• Fe-La-Mn-O-Sr
• Raman spectra
• wavenumber of optical phonon
• infrared spectra
• wavenumber of transverse optical phonon
• wavenumber of longitudinal optical phonon
• conductor
• disordered
• antiferromagnetic
• chalcogen
• ferromagnetic