Ba-Cu-O-Y, Chalcogen, Metal, Electronic heat capacity coefficient

• Ba-Cu-O-Pr-Y
• Ba-Cu-Fe-O-Y
• Ba-Cu-O-Y-Zn
• Ba-Cr-Cu-O-Y
• conductor
• high-tc superconductor
• chalcogen
• alkaline
• metal
• orthorhombic
• tetragonal