Resistivity and magneto-resistivity of antiferromagnetic U2Pt2Sn

The temperature dependence of the resistivity, ϱ(T) and magnetoresistivity (T ≥ 1.5 K, B ≤ 8 T) of polycrystalline U2Pt2Sn are reported. ϱ(T) shows maxima at 12 K and 45 K and a minimum at 19 K. A minimum is observed in d ϱ(T) d T at the Neel temperature of 15 K. The magnetoresistance at low temperatures is negative and below TN it displays a step-like decrease in an applied field of about 2 T indicating the presence of a phase transition.