Optical properties, Oxide, R3c

• Bi-Fe-O
• Li-Nb-O
• Bi-Fe-Nd-O
• Bi-Fe-La-O
• Bi-Fe-Mn-O
• phonons
• Raman spectra
• wavenumber of optical phonon
• optical spectra
• infrared spectra
• oxide
• chalcogen
• transitional
• disordered
• ferroelectric
• trigonal
• cubic