Bi-Fe-O, Chalcogen, Conductor, Semiconductor, Phonons

• Bi-Fe-Nd-O
• Bi-Fe-La-O
• Bi-Ca-Fe-O-Ti
• Bi-Fe-O-Sm
• Raman spectra
• wavenumber of optical phonon
• infrared spectra
• wavenumber of longitudinal optical phonon
• wavenumber of transverse optical phonon
• semiconductor
• conductor
• chalcogen
• pnictogen
• transitional
• trigonal
• orthorhombic
• tetragonal
• cubic
• triclinic