Ba-Cu-O-Y, Cell and atoms, Chalcogen, Unit cell

• Ba-Cu-Fe-O-Y
• Ba-Ca-Cu-O-Y
• Ba-Cu-La-O-Y
• Ba-Co-Cu-O-Y
• rare earth
• alkaline
• chalcogen
• transitional
• orthorhombic
• tetragonal
• cubic
• trigonal
• monoclinic