Spin-glass behavior in ternary uranium compound U2CuGa 3

Tomoo Yamamura, Tokushin Ri, Kunio Yubuta, Y. Shiokawa

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The results of dc susceptibility, magnetization, magnetic relaxation and specific heat measurements on U2CuGa3, a compound reported early in the literature as exhibiting interesting magnetic properties, are presented. The temperature dependence of susceptibility measured in the zero-field cooling (ZFC) mode and in the field cooling (FC) mode displays spin-glass behavior below a characteristic temperature Tf (∼16K) in agreement with the literature. As a new evidence for the formation of spin-glass state in this compound, the specific heat data do not show any visible singularity around Tf indicating the absence of long-range magnetic order at this temperature. Furthermore, the characteristic remanence effect and magnetic relaxation on a macroscopic time scale are also observed below Tf. The experimental results are compared with those of orthorhombic CeCu2-type spin-glass compound U2AuGa 3 and hexagonal AlB2-type spin-glass compound U 2PdSi3.

Original languageEnglish
Pages (from-to)226-229
Number of pages4
JournalJournal of Alloys and Compounds
Volume374
Issue number1-2
DOIs
Publication statusPublished - 2004 Jul 14

Keywords

  • Magnetic relaxation
  • Specific heat
  • Spin-glass
  • UCuGa

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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