Alkaline, Chalcogen, Oxide, Khan, Structural properties

• Ba-Co-Fe-O
• Ba-Ca-Cu-O-Tl
• Fe-Mg-O
• Cr-Fe-Mg-O
• Ba-Fe-Mo-O-Pr
• chalcogen
• oxide
• alkaline
• disordered
• cubic
• tetragonal
• orthorhombic
• hexagonal
• trigonal