Chalcogen, Oxide, Fe-O, Magnetic properties, Trigonal

• Bi-Fe-O
• Cu-Fe-O
• Bi-Fe-La-O
• Fe-La-Mn-O-Sr
• magnetization
• Moessbauer spectra
• magnetic transitions
• magnetic hysteresis
• values of magnetization
• transitional
• oxide
• chalcogen
• disordered
• antiferromagnetic