Bi2Ca0.5Cu1.5Fe0.5O8.5Sr2Y0.5

• Bi-Ca-Cu-Fe-O-Sr-Y
• magnetic properties
• Moessbauer spectra
• superconductivity
• values of Moessbauer spectra
• isomer shift
• rare earth
• conductor
• chalcogen
• high-tc superconductor
• alkaline
• orthorhombic