Disordered, Transitional, Optics, Tetragonal

• O-Ti
• Cu-La-O-Sr
• Ba-Cu-O-Y
• Ba-O-Ti
• Cu-In-Se
• phonons
• optical spectra
• optical absorption
• wavenumber of optical phonon
• Raman spectra
• transitional
• disordered
• chalcogen
• oxide
• rare earth