Specific-heat study of the UCoAl1-xGax system

I. K. Kozlovskaya, A. V. Andreev, J. Šebek, M. Tomida, Y. Shiokawa, Y. Homma, V. Sechovský

Research output: Contribution to journalArticlepeer-review

Abstract

Specific-heat data for UCoAl1-xGax solid solutions between the 5f-band metamagnet UCoAl and ferromagnetic UCoGa are presented. The decrease of the y-coefficient from 68 to 57 mJ mol-1 K-2 with x increasing up to 0.2 is attributed to suppression of spin fluctuations. For x between 0.60 and 0.70, γ drops from 55 to 37 mJ mol-1 K-2, although bulk magnetic properties vary monotonously with concentration. A possible explanation of this abrupt change in terms of percolation from a cluster to a homogenous ferromagnetic state is proposed.

Original languageEnglish
Pages (from-to)242-243
Number of pages2
JournalPhysica B: Condensed Matter
Volume259-261
DOIs
Publication statusPublished - 1999

Keywords

  • Metamagnetism
  • UCoAl
  • Uranium intermetallics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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