Bi-Fe-O, Conductor, Pnictogen, Phonons, Trigonal

• Bi-Fe-La-O
• Ba-Bi-Co-Fe-O
• Bi-Ca-Fe-O-Ti
• Ba-Bi-Fe-O
• Raman spectra
• wavenumber of optical phonon
• infrared spectra
• wavenumber of transverse optical phonon
• energy of optical phonon
• oxide
• disordered
• conductor
• chalcogen
• pnictogen