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|Title:||Magnetic and Electrical Properties of (Pu,Lu)Pd3|
|Authors:||LE M. D.; MCEWEN K.; COLINEAU Eric; GRIVEAU Jean-Christophe; ELOIRDI Rachel|
|Citation:||PHYSICAL REVIEW B vol. 82 no. 15 p. 155136-1 - 155136-9|
|Publisher:||AMER PHYSICAL SOC|
|Type:||Articles in periodicals and books|
|Abstract:||We present measurements of the magnetic susceptibility, heat capacity and electrical resistivity of Pu1-xLuxPd3, with x=0, 0.1, 0.2, 0.5, 0.8 and 1. PuPd3 is an antiferromagnetic heavy fermion compound with TN = 24 K. With increasing Lu doping, both the Kondo and RKKY interaction strengths fall, as judged by the Sommerfeld coefficient g and Néel temperature TN. Fits to a crystal field model of the resistivity also support these conclusions. The paramagnetic effective moment µeff increases with Lu dilution, indicating a decrease in the Kondo screening. In the highly dilute limit, µeff approaches the value predicted by intermediate coupling calculations. In conjunction with an observed Schottky peak at ~60 K in the magnetic heat capacity, corresponding to a crystal field splitting of ~12 meV, a mean-field intermediate coupling model with nearest neighbour interactions has been developed.|
|JRC Directorate:||Nuclear Safety and Security|
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