Chalcogen, Diamagnetic, Intermediate valence, Karpinski

• Ba-Cu-O-Y
• K-O-Os
• O-Os-Rb
• As-F-Fe-O-Pr
• Ba-Cu-Ho-O
• superconductivity
• electronic and electrical properties
• superconducting transition temperature
• structural properties
• values of superconducting transition temperature
• transitional
• diamagnetic
• intermediate valence
• chalcogen
• conductor
• orthorhombic
• cubic
• tetragonal