Alkaline, Rare earth, Kemmler sack, Structural properties

• Co-Cu-La-O-Sr
• Ba-Co-Cu-O-Y
• Ba-Gd-O-U
• Ba-O-U-Y
• O-Sr-U-Yb
• chalcogen
• alkaline
• rare earth
• transitional
• lanthanoid
• trigonal
• tetragonal
• cubic
• hexagonal
• orthorhombic