1993, Tetragonal

• Ce-Cu-Nd-O
• Ba-Ca-Cu-Hg-O
• Al-Ti
• Cu-La-O-Sr
• Ba-Cu-La-O
• magnetic properties
• structural properties
• electronic and electrical properties
• magnetization
• conductivity or resistivity
• transitional
• rare earth
• disordered
• metal
• lanthanoid