Alkaline, Chalcogen, Spinel, Cubic, Fe-Mg-Mn-O

• Fe-Mg-Mn-Ni-O
• Co-Fe-Mg-Mn-O
• Fe-Gd-Mg-Mn-O
• Fe-Mg-Mn-O-Zn
• magnetic properties
• structural properties
• Moessbauer spectra
• electronic and electrical properties
• magnetization
• transitional
• spinel
• alkaline
• chalcogen
• oxide