Bi, Chalcogen, Conductor, Pnictogen, Phonons, Trigonal

• Bi-Fe-O
• Bi-Na-O-Ti
• Bi-Se
• Bi-Fe-La-O
• Bi-Te
• Raman spectra
• wavenumber of optical phonon
• infrared spectra
• energy of optical phonon
• wavenumber of transverse optical phonon
• pnictogen
• chalcogen
• conductor
• semiconductor
• disordered