Abstract
Magnetoresistivity measurements of polycrystalline U 2Rh 2Sn in an applied magnetic field of 8.29 T reveal a sharp minimum at the antiferromagnetic transition temperature T N ≊20 K . The thermoelectric power of U 2Rh 2Sn exhibits negative values for temperatures T⪯24 K. At T≊4 K , a large decrease in resistivity with lowering of temperature is observed for polycrystalline U 2Fe 2Sn. This anomaly originates from the occurrence of free tin on the grain boundaries of the sample giving a decrease in resistivity as a result of superconductivity.
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