Electrical and magnetic properties of the Kondo system (Ce1 - x Yx) Pt2 Si2 (0 ≤ x ≤ 1)

M. B. Tchoula Tchokonté, P. de V. du Plessis, D. Kaczorowski, A. M. Strydom

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Measurements of electrical resistivity ρ (T), magnetoresistivity MR and magnetic susceptibility χ (T) are reported for the pseudo-ternary alloys (Ce1 - x Yx) Pt2 Si2. ρ (T) results reveal coherent Kondo scattering above 80% Ce concentration and a rapid evolution to single-ion Kondo scattering with an increase in Y concentration x. MR measurements on Ce alloys in the single-ion Kondo region are analyzed on the basis of calculations by Schlottmann for the Bethe-ansatz solution in the context of the Coqblin-Schrieffer model. The analysis yields values of the Kondo temperature TK and the effective moment of the Kondo ion μK. χ (T) data above 120 K follow the Curie-Weiss relation for all the investigated concentrations and give effective moment values μeff in close agreement with μeff = 2.54 μB expected for the Ce3 +-ion.

Original languageEnglish
Pages (from-to)1350-1352
Number of pages3
JournalPhysica B: Condensed Matter
Issue number5-9
Publication statusPublished - 1 Apr 2008


  • (Ce Y) Pt Si
  • Kondo alloys
  • Magnetic susceptibility
  • Magnetoresistivity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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