Ba-Cu-O-Y, Chalcogen, Values of magnetic susceptibility

• Ba-Cu-Fe-O-Y
• Ba-Cu-O-Pr-Y
• Ba-Co-Cu-O-Y
• Ba-Cu-Ni-O-Y
• rare earth
• transitional
• alkaline
• chalcogen
• high-tc superconductor
• orthorhombic
• tetragonal