Chalcogen, Conductor, Metal, Non-disordered, Phonons, Trigonal

• Bi-Fe-O
• Fe-O
• Bi-Se
• O-Si
• Al-La-O
• Raman spectra
• wavenumber of optical phonon
• infrared spectra
• wavenumber of transverse optical phonon
• vibrational spectra
• metal
• non-disordered
• chalcogen
• conductor
• semiconductor