Chalcogen, Conductor, Oxide, Transitional, Phonons

• Ba-Cu-O-Y
• Bi-Fe-O
• O-Zn
• Ba-O-Ti
• Fe-O
• Raman spectra
• wavenumber of optical phonon
• infrared spectra
• wavenumber of longitudinal optical phonon
• vibrational spectra
• transitional
• oxide
• chalcogen
• conductor
• semiconductor
• orthorhombic
• cubic
• tetragonal
• trigonal
• monoclinic