Er-x polyhedra, Magnetic moment, Ternary

• B-Er-Fe
• Co-Er-Fe
• Er-Ni-Sn
• Er-Fe-Mo
• Cu-Er-Ge
• ternary
• lanthanoid
• rare earth
• transitional
• metal
• tetragonal
• orthorhombic
• hexagonal
• cubic
• monoclinic