Collapse of antiferromagnetism induced by Ni-substitution in Eu(Pt1 - x Nix)2 Si2

A. Mitsuda, Y. Ikeda, N. Ietaka, S. Fukuda, Y. Isikawa

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To clarify anomalous behaviour under high pressure in the antiferromagnet EuPt2 Si2(TN = 15 K), effects of substitution of Ni for Pt in EuPt2 Si2 are investigated. Eu(Pt1 - x Nix)2 Si2 is of single phase in the concentration range of 0 ≤ x ≤ 0.25 with preserving the identical crystal structure. The Ni-substitution decreases the lattice volume and the Néel temperature TN. For x ≥ 0.20 the antiferromagnetism is collapsed completely. These phenomena correspond well to the behaviour under high pressure in EuPt2 Si2 and are associated with Eu valence variation toward a nonmagnetic trivalent direction.

Original languageEnglish
Pages (from-to)319-321
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Issue number2 SUPPL. PART 1
Publication statusPublished - Mar 2007

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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