Non-disordered, Optics

• Ba-Cu-O-Y
• As-Ga
• O-Zn
• O-V
• Fe-O
• phonons
• optical spectra
• Raman spectra
• optical absorption
• wavenumber of optical phonon
• non-disordered
• chalcogen
• transitional
• conductor
• nonmetal
• cubic
• orthorhombic
• tetragonal
• monoclinic
• trigonal