1992, Tetragonal

• Ru-Si-U
• Al-Ti
• Ba-Ca-Cu-O-Tl
• Ba-Cu-O-Tl
• Ce-Cu-Nd-O
• magnetic properties
• electronic and electrical properties
• structural properties
• magnetization
• conductivity or resistivity
• transitional
• disordered
• rare earth
• metal
• non-disordered