Chalcogen, Kemmler sack, Structural properties

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