Kondo behaviour of the solid solution (Ce1-xLax)PtGa

F. C. Ragel, P. De V. Du Plessis, A. M. Strydom

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6 Citations (Scopus)


The solid solution (Ce1-xLax)PtGa has been studied through X-ray diffraction, magnetization (σ(B)), magnetic susceptibility (χ(T)), electrical resistivity (ρ(T)), magnetoresistivity (MR) and heat capacity (CP(T)) measurements. The Nel temperature (TN=3.3 K) for CePtGa is lowered upon La substitution as observed from χ(T) and ρ(T) measurements. The Kondo temperature TK as calculated from MR measurements is comparable to TN and also decreases with La substitution. The volume dependence of TK is in accordance with the compressible Kondo lattice model and a Doniach diagram of the results is presented. CP(T) measurements are presented for CePtGa, Ce 0.2La0.8PtGa and LaPtGa and the results are discussed in terms of the electronic and magnetic properties. Other features of interest are anomalies in ρ(T) and CP(T) due to crystalline electric field effects and metamagnetism as observed in σ(B) studies for samples with 0≤x≤ 0.3.

Original languageEnglish
Pages (from-to)1694-1701
Number of pages8
JournalJournal of Physics and Chemistry of Solids
Issue number12
Publication statusPublished - Dec 2010


  • A. Magnetic materials
  • D. Magnetic properties
  • D. Specific heat
  • D. Transport properties

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics


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