Alkaline, Transitional, Ca-Er, Tetragonal

• Ca-Cu-Er-O-Pb-Sr-Tl
• Ca-Cu-Er-O-Pb-Sr
• Ca-Cu-Er-O-Sr-Tl
• Bi-Ca-Cu-Er-O-Sr
• Al-Ca-Er-O-Y
• thermal and thermodynamic properties
• magnetic properties
• electronic and electrical properties
• superconductivity
• structural properties
• transitional
• rare earth
• alkaline
• lanthanoid
• chalcogen