Possible Double Magnetic Phase Transition in Dy₅CuPb₃.

Abstract

5 CuPb 3 . -The magnetic and transport properties of the title compound are characterized by magnetic susceptibility, electrical resistivity, magnetoresistance, and thermoelectric power measurements. The compound crystallizes in the hexagonal space group P63/mcm (Hf5CuSn3-type structure). It probably undergoes two successive magnetic transitions at TC = 45 and T N = 6.5 K. The experimental data are indicative of a ferri-and antiferromagnetic transition, respectively. The compound exhibits a large magnetoresistance value of -24% at temperatures between TC and TN and has a negative thermoelectric power of -17 µV/K at 300 K. -(TRAN*, V. H.; GULAY, L. D.; J. Solid State Chem. 179 (2006) 3, 646-651; Trzebiatowski Inst. Low Temp. Struct. Res., Pol. Acad. Sci., PL-50-950 Wroclaw, Pol.; Eng.) -W. Pewestorf 24-012