Er-Fe, Er-x polyhedra, Ferromagnetic, Orthorhombic

• Er-Fe-O
• Er-Fe-Ge
• Er-Fe-H
• Er-Fe-Sn
• magnetic properties
• thermal and thermodynamic properties
• magnetization
• magnetic transitions
• mechanical properties
• ternary
• rare earth
• lanthanoid
• ferromagnetic
• transitional