Bulk metallic superconductive La60Cu20Ni10Al10 glass

A bulk metallic superconductive La60Cu20Ni10Al10 glass with highly glass forming ability and large supercooled liquid temperature region is developed. The superconductive critical temperature determined by the electrical resistance and the specific heat measurements is 2.5 K. The obtained electron-phonon interaction parameter demonstrates that the bulk metallic glass is an intermediate coupling superconductor. The new nonmagnetic rare-earth based glass offers an ideal material for studying the superconductivity and other low temperature properties in the metallic glasses.