Superconducting phase transition in Y NiGe3, a non--electron reference to the unconventional superconductor CeNiGe3

A polycrystalline sample of Y NiGe3, being a non-magnetic isostructural counterpart to the unconventional pressure-induced superconductor CeNiGe3, was studied by means of specific heat and electrical resistivity measurements at temperatures down to 360 mK and in magnetic fields up to 500 Oe. The compound was found to exhibit an ambient-pressure superconductivity below T c = 0.46 K . The superconducting state in Y NiGe3 is destroyed by a magnetic field of the order of 500 Oe.