Spin-glass behavior in U2PtSi3

D. X. Li, Y. Shiokawa, Y. Homma, A. Uesawa, T. Suzuki

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

We present the DC magnetization, specific heat and magnetic relaxation measurements on well-annealed polycrystalline sample of U2PtSi3. All the main characteristics of spin-glass behavior are observed. They are: (1) frozen-in magnetic moments below a freezing temperature Tf and, hence, a peak in the field-dependent magnetization; (2) absence of visible singularity in temperature dependence of specific heat at Tf; (3) irreversibility in magnetization below Tf; (4) remanent magnetic relaxation on macroscopic time scales after changing the magnetic field below Tf. The spin-glass state in U2PtSi3 at low temperatures is considered to originate from the randomly frustrated U-U interactions resulting from the disordering of Pt and Si atoms on the crystallographic sites.

Original languageEnglish
Pages (from-to)261-266
Number of pages6
JournalJournal of Magnetism and Magnetic Materials
Volume176
Issue number2-3
DOIs
Publication statusPublished - 1997 Dec 11

Keywords

  • Magnetic relaxation
  • Magnetization
  • Specific heat
  • Spin glass

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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