Fakhrul islam

• Cu-Fe-Ni-O
• Fe-Ni-O
• Bi-Fe-Gd-Mn-O
• Cu-Fe-O
• magnetic properties
• structural properties
• electronic and electrical properties
• magnetization
• conductivity or resistivity
• transitional
• chalcogen
• ferrimagnet
• ferromagnetic
• spinel
• cubic
• tetragonal