Chalcogen, Optical absorption coefficient - wavenumber diagram

• Ho-O-P-Y
• Al-B-Ho-O-Y
• Na-O-V
• B-Fe-O-Tb
• Eu-O-Si
• chalcogen
• transitional
• non-disordered
• disordered
• nonmetal
• trigonal
• tetragonal
• cubic
• orthorhombic
• monoclinic