Li-Nb-O, Nb-x polyhedra, Phonons, Trigonal

• Ba-Li-Nb-O-W
• Li-Mg-Nb-O
• Li-Na-Nb-O
• Li-Nb-O-Ta
• wavenumber of optical phonon
• Raman spectra
• infrared spectra
• vibrational spectra
• wavenumber of longitudinal optical phonon
• disordered
• oxide
• chalcogen
• alkali
• transitional