Chalcogen, Conductor, Disordered, Semiconductor, Values of sound velocity

• Ba-Cu-O-Y
• Cu-La-O-Sr
• Cd-Se
• Fe-O
• Sn-Te
• semiconductor
• chalcogen
• disordered
• conductor
• transitional
• cubic
• orthorhombic
• tetragonal
• trigonal
• monoclinic