Chalcogen, Conductor, Non-disordered, Energy level diagram

• Ir-O-Sr
• O-V
• Cu-O
• Er-La-O-V
• Er-Eu-Mg-O-Si-Sr
• non-disordered
• chalcogen
• conductor
• semiconductor
• disordered
• tetragonal
• cubic
• monoclinic
• orthorhombic
• trigonal