B-Er-Fe, Boride, Lanthanoid, Er-x polyhedra

• B-Er-Fe-Mn
• B-Er-Fe-H
• B-Co-Er-Fe
• magnetic properties
• magnetization
• magnetic transitions
• magnetic moment
• structural properties
• metalloid
• rare earth
• boride
• lanthanoid
• transitional
• tetragonal
• hexagonal