Chalcogen, Disordered, Real part of magnetic permeability

• Ba-Co-Fe-O
• Fe-Ni-O-Zn
• Fe-Mn-O-Zn
• Ba-Fe-O
• Ba-Co-Fe-O-Ti
• chalcogen
• disordered
• transitional
• oxide
• ferromagnetic
• cubic
• hexagonal
• trigonal
• orthorhombic