1990

• Ba-Cu-O-Y
• Fe
• Pu
• Bi-Ca-Cu-O-Sr
• Mn
• magnetic properties
• structural properties
• electronic and electrical properties
• phase transitions
• phase diagram
• transitional
• non-disordered
• metal
• rare earth
• disordered
• cubic
• tetragonal
• orthorhombic
• hexagonal
• trigonal