Chalcogen, Conductor, Metal, Rare earth, Karpinski, Orthorhombic

• Ba-Cu-O-Y
• Ba-Ca-Cu-O-Y
• As-Fe-O-P-Sm
• As-Fe-Gd-O
• As-Fe-O-Sm
• superconductivity
• superconducting transition temperature
• structural properties
• values of superconducting transition temperature
• electronic and electrical properties
• metal
• rare earth
• conductor
• chalcogen
• transitional