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Publication Detail
Magnetic and electrical properties of (Pu,Lu)Pd-3
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Article
  • Authors:
    Le MD, McEwen KA, Colineau E, Griveau JC, Eloirdi R
  • Publisher:
    AMER PHYSICAL SOC
  • Publication date:
    22/10/2010
  • Journal:
    PHYS REV B
  • Volume:
    82
  • Issue:
    15
  • Print ISSN:
    1098-0121
  • Language:
    EN
  • Keywords:
    INTERMETALLIC COMPOUNDS, RESISTIVITY, SPECTRA, ALLOYS
  • Addresses:
    Le, MD
    Helmholtz Zentrum Berlin Mat & Energie
    D-14109
    Berlin
    Germany

    UCL
    London Ctr Nanotechnol
    London
    WC1E 6BT
    England
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 T-N = 24 K. With increasing Lu doping, both the Kondo and Ruderman-Kittel-Kasuya-Yosida interaction strengths fall, as judged by the Sommerfeld coefficient gamma and Neel temperature T-N. Fits to a crystal-field model of the resistivity also support these conclusions. The paramagnetic effective moment mu(eff) increases with Lu dilution, indicating a decrease in the Kondo screening. In the highly dilute limit, mu(eff) approaches the value predicted by intermediate coupling calculations. In conjunction with an observed Schottky peak at similar to 60 K in the magnetic heat capacity, corresponding to a crystal field splitting of similar to 12 meV, a mean-field intermediate coupling model with nearest-neighbor interactions has been developed.
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