Kondo behavior in antiferromagnetic CeNiGe3

A. P. Pikul, D. Kaczorowski, T. Plackowski, A. Czopnik, H. Michor, E. Bauer, G. Hilscher, P. Rogl, and Yu. Grin
Phys. Rev. B 67, 224417 – Published 16 June 2003
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Abstract

CeNiGe3, crystallizing in the orthorhombic SmNiGe3-type crystal structure, was studied by means of dc and ac magnetic susceptibility, magnetization, electrical resistivity, magnetoresistivity, Hall effect, and specific-heat measurements. The compound orders antiferromagnetically at TN=5.5K due to the presence of well localized 4f magnetic moments, which are partly screened via a Kondo-like mechanism. The electrical behavior is governed by an interplay of Ruderman-Kittel-Kasuya-Yosida and Kondo interactions modified by crystal-field effects. The Kondo temperature is of similar magnitude as TN, and the overall crystal electric field splitting is of the order of 160 K. The low-temperature specific heat exhibits some enhancement indicating the formation of moderate-heavy quasiparticles in the antiferromagnetic state. The specific variation with applied magnetic field of the main physical characteristics of CeNiGe3 points at a complex magnetic structure of the compound in the ordered region.

  • Received 31 January 2003

DOI:https://doi.org/10.1103/PhysRevB.67.224417

©2003 American Physical Society

Authors & Affiliations

A. P. Pikul, D. Kaczorowski, T. Plackowski, and A. Czopnik

  • Institute of Low Temperature and Structure Research, Polish Academy of Sciences, ul. Okólna 2, 50-422 Wrocław, Poland

H. Michor, E. Bauer, and G. Hilscher

  • Institut für Festkörperphysik, Technische Universität Wien, Wiedner Hauptstraße 8-10, A-1040 Wien, Austria

P. Rogl

  • Institut für Physikalische Chemie, Universität Wien, Währinger Straße 42, A-1090 Wien, Austria

Yu. Grin

  • Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Str. 40, D-01187 Dresden, Germany

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Issue

Vol. 67, Iss. 22 — 1 June 2003

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