Li-Nb-O, Nb-x polyhedra, Optical properties

• K-Li-Nb-O
• Li-Mg-Nb-O
• Li-Na-Nb-O
• Li-Nb-O-Zn
• phonons
• wavenumber of optical phonon
• optical absorption
• Raman spectra
• reflectivity
• transitional
• chalcogen
• alkali
• oxide
• disordered
• trigonal
• tetragonal
• orthorhombic
• monoclinic
• hexagonal