Chalcogen, Disordered, Khan

• Ba-Ca-Cu-O-Tl
• Co-Fe-O-Sr
• Fe-Mg-O
• Ba-Co-Fe-O
• Ba-Cu-O-Y
• magnetic properties
• structural properties
• electronic and electrical properties
• optical properties
• permittivity (dielectric constant)
• chalcogen
• disordered
• transitional
• oxide
• conductor
• orthorhombic
• cubic
• tetragonal
• trigonal
• hexagonal