Ba-Cu-O-Y, Chalcogen, Oxide, Electrical conductivity

• Ba-Cu-La-O-Y
• Ba-Cu-Nd-O-Y
• Al-Ba-Cu-O-Y
• Au-Ba-Cu-O-Y
• rare earth
• alkaline
• oxide
• chalcogen
• transitional
• orthorhombic
• tetragonal
• cubic
• monoclinic
• trigonal