Chalcogen, Transitional, Tajima

• Ba-Cu-O-Y
• Ba-Cu-Eu-O
• F-Fe-La-O-P
• Fe-La-O-P
• As-F-Fe-La-O
• electronic and electrical properties
• superconductivity
• conductivity or resistivity
• superconducting transition temperature
• optical properties
• transitional
• chalcogen
• rare earth
• oxide
• lanthanoid
• tetragonal
• orthorhombic
• monoclinic
• cubic
• trigonal