Li-Nb, Optical properties, Oxide, Trigonal

• Li-Nb-O
• Li-Mg-Nb-O
• Fe-Li-Nb-O
• Er-Li-Nb-O
• Li-Nb-O-V
• phonons
• wavenumber of optical phonon
• optical absorption
• Raman spectra
• reflectivity
• transitional
• oxide
• chalcogen
• alkali
• disordered