Chalcogen, Conductor, Transitional, Phonons

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