Ferromagnetic, Transitional, Real part of magnetic permeability

• Ba-Co-Fe-O
• Fe-Ni-O-Zn
• Ba-Fe-O
• Ba-Co-Fe-O-Ti
• B-Cu-Fe-Nb-Si
• ferromagnetic
• transitional
• chalcogen
• disordered
• oxide
• cubic
• hexagonal
• trigonal
• orthorhombic