B-C-Er-Ni, Er-x polyhedra, Superconductivity, Tetragonal

• B-C-Er-Ni-Tb
• B-C-Co-Er-Ni
• B-C-Er-Lu-Ni
• superconducting transition temperature
• values of superconducting transition temperature
• critical magnetic field
• upper critical magnetic field
• metal
• metalloid
• borocarbide
• lanthanoid
• rare earth