Chalcogen, Conductor, Disordered, Transitional, Khan

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