Chalcogen, Conductor, Disordered, Transitional, Kim, Phonons

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