CePdSb: a possible ferromagnetic Kondo-lattice system

Malik, S. K. ; Adroja, D. T. (1991) CePdSb: a possible ferromagnetic Kondo-lattice system Physical Review B, 43 (7). pp. 6295-6298. ISSN 0163-1829

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Official URL: http://prb.aps.org/abstract/PRB/v43/i7/p6295_1

Related URL: http://dx.doi.org/10.1103/PhysRevB.43.6295


Magnetic-susceptibility and electrical-resistivity measurements on CePdSb and GdPdSb have been carried out in the temperature range of 4.2-300 K. The measurements reveal that CePdSb orders ferromagnetically with an ordering temperature (TM) of 17 K while GdPdSb orders antiferromagnetically with a Neel temperature (TN) of 15.5 K. In the paramagnetic state, the susceptibility of CePdSb follows Curie-Weiss behavior between 50 and 300 K but deviates from it below 50 K. Its saturation magnetic moment per formula unit at 4.2 K is 1.2 μB, which is reduced from the free-ion value of 2.14μB for the Ce3+ ion. The resistivity of CePdSb shows a broad maximum at about 150 K and a ln(T) behavior at high temperatures, indicating the combined influence of crystalline electric fields and Kondo effect on the 4f moments. Thus CePdSb appears to be a Kondo-lattice system with ferromagnetic ordering of the cerium moments.

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