B-C-Er-Ni, B-x polyhedra, Lanthanoid

• B-C-Co-Er-Ni
• B-C-Er-Ni-Tb
• B-C-Er-Lu-Ni
• magnetic properties
• thermal and thermodynamic properties
• magnetic transitions
• electronic and electrical properties
• superconductivity
• metal
• metalloid
• borocarbide
• lanthanoid
• rare earth
• tetragonal