Anomalous resistivity and superconductivity in the polymorphs of (TiZrHf)95Sc5

Abstract

Three polymorphs of (TiZrHf)₉₅Sc₅, one of which is glassy, are identified. The materials are the result of splat cooling arc melted samples. The temperature-dependent resistivities of the body centered cubic and amorphous materials are anomalous. Low temperature resistivity and heat capacity measurements indicate that superconducting transitions are present when the material has either a body centered cubic (T_C ∼ 1.5 K) or hexagonal close packed (T_C ∼ 0.8 K) crystal structure and the superconductivity of the amorphous phase below 0.65 K cannot be ruled out. We include evidence of a robust critical field in the body centered cubic material.