Electrical resistivity of intermetallic compound PrInAg2 at ultra low temperatures

Abstract Resistivity of the Heusler-type paramagnetic intermetallic compound PrInAg 2 is measured by the SQUID technique, down to 0.18 mK. The sample is cooled by an adiabatic Cu nuclear demagnetization refrigerator. No evidence of any phase transition is observed at any temperature. However, a ‘+’ T 1/2 dependence of resistivity is observed below 100 mK.