Chalcogen, Oxide, Transitional, Kemmler sack, Structural properties

• Bi-Fe-O-Pb-Sr
• Co-Cu-La-O-Sr
• Ba-Co-Cu-O-Y
• Ba-Co-Ir-O
• Bi-O-Pb-Pt-Ru
• transitional
• oxide
• chalcogen
• alkaline
• trigonal
• cubic
• tetragonal
• hexagonal
• orthorhombic