Chalcogen, Disordered, Transitional, Kim, Phonons

• Ba-O-Ti
• Ba-Cu-O-Y
• Fe-Ni-O-Zn
• Bi-Fe-O
• La-Li-O-Si
• Raman spectra
• wavenumber of optical phonon
• infrared spectra
• wavenumber of transverse optical phonon
• energy of optical phonon
• disordered
• transitional
• chalcogen
• oxide
• conductor
• tetragonal
• orthorhombic
• cubic
• trigonal
• hexagonal