Chalcogen, Conductor, Disordered, Semiconductor, 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
• semiconductor
• disordered
• conductor
• chalcogen
• transitional
• tetragonal
• cubic
• orthorhombic
• trigonal
• hexagonal