Spin-glass behaviour with extended short-range ferromagnetic order in U2RhSi3

D. X. Li, A. Dönni, Yasuo Kimura, Y. Shiokawa, Y. Homma, Y. Haga, E. Yamamoto, T. Honma, Y. Onuki

研究成果: Article査読

56 被引用数 (Scopus)

抄録

For U2RhSi3, which crystallizes in a disordered derivative of the hexagonal AIB2-type structure, we present a detailed investigation of magnetic properties by measurements of AC and DC susceptibility, magnetization, magnetic relaxation, specific heat and electrical resistivity. The results provide evidence for the formation of extended short-range ferromagnetic order at the temperature Tc ≈ 25 K, as indicated by a specific heat anomaly, and for a low-temperature spin-glass state with a freezing temperature Tf = 19.6 K. According to systematic specific heat experiments on isostructural spin-glass systems, short-range ferromagnetic correlations above the spin-freezing temperature are observed in U2RhSi3 (Tf ≈ 25 K, Tf = 19.6 K) and U2CoSi3 (Tc ≈ 10 K, Tf ≈ 8 K), but not in U2PdSi3 (Tf = 13.5 K) and U2NiSi3 (Tf ≈ 22 K). Different degrees of structural disorder of transition metal and silicon atoms, both on the same crystallographic site, seem to be the origin for the distinct different magnetic behaviour.

本文言語English
ページ(範囲)8263-8274
ページ数12
ジャーナルJournal of Physics Condensed Matter
11
42
DOI
出版ステータスPublished - 1999 10 25

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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