Chalcogen, Rare earth, Pmmm

• Ba-Cu-O-Y
• Ba-Cu-O-Pr
• Ba-Cu-Gd-O
• Ba-Cu-Er-O
• Ba-Cu-Eu-O
• structural properties
• magnetic properties
• superconductivity
• electronic and electrical properties
• superconducting transition temperature
• chalcogen
• rare earth
• transitional
• alkaline
• oxide
• orthorhombic
• tetragonal
• monoclinic
• cubic