Souza azevedo

• Ce-Cu-Eu-O-Ru-Sr
• Ce-Cu-Eu-O-Ru-Sn-Sr
• Ca-O-Ru-Sn-Sr
• magnetic properties
• Moessbauer spectra
• superconducting transition temperature
• superconductivity
• magnetic transitions
• transitional
• chalcogen
• alkaline
• rare earth
• lanthanoid
• tetragonal