Chalcogen, Disordered, Transitional, Optics

• Ba-Cu-O-Y
• O-Zn
• Fe-O
• O-Ti
• Cu-La-O-Sr
• phonons
• optical spectra
• wavenumber of optical phonon
• Raman spectra
• optical absorption
• transitional
• disordered
• chalcogen
• oxide
• non-disordered
• cubic
• tetragonal
• orthorhombic
• trigonal
• monoclinic