15-vertex frank-kasper, Fe-O-Sr, Magnetic properties, Magnetoplumbite

• Fe-O-Ru-Sr-Ti
• Cr-Fe-O-Sr
• Moessbauer spectra
• magnetic hysteresis
• coercive field
• magnetization
• isomer shift
• hard magnet
• alkaline
• disordered
• chalcogen
• magnetoplumbite
• hexagonal