Amanullah choudhury

• Co-Cu-Fe-Mn-Ni-O
• Cu-Fe-Mn-Ni-O
• Cu-Fe-Ni-O
• Fe-Ni-O
• Cu-Fe-O
• electronic and electrical properties
• magnetic properties
• conductivity or resistivity
• permittivity (dielectric constant)
• magnetization
• chalcogen
• transitional
• ferromagnetic
• spinel
• disordered
• cubic
• tetragonal