1990, Rare earth

• Ba-Cu-O-Y
• Cu-La-O-Sr
• Cu-La-O
• Ce-Cu-Nd-O
• La
• magnetic properties
• structural properties
• electronic and electrical properties
• magnetization
• phase transitions
• rare earth
• lanthanoid
• transitional
• non-disordered
• metal
• tetragonal
• orthorhombic
• cubic
• hexagonal
• trigonal