Interplay between effects of external pressure and dilution of the U sublattice in UCoAl-based materials

A. V. Andreev, K. Koyama, N. V. Mushnikov, V. Sechovský, Y. Shiokawa, I. Satoh, K. Watanabe

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Substitution of Y for U in the itinerant 5f-electron metamagnet, UCoAl, transforms the system to a ferromagnetic state. Application of external hydrostatic pressure above 0.3 GPa suppresses the ferromagnetism and restores the "UCoAl-type" metamagnetism back. However, the metamagnetic transition becomes of the second order instead of the first order one in parent UCoAl. This is attributed to enhancement of fluctuations of the U magnetic moment upon dilution of the U sublattice.

Original languageEnglish
Pages (from-to)33-38
Number of pages6
JournalJournal of Alloys and Compounds
Volume441
Issue number1-2
DOIs
Publication statusPublished - 2007 Aug 30

Keywords

  • Ferromagnetism
  • High pressure
  • Metamagnetism
  • Single crystals
  • Uranium intermetallics

ASJC Scopus subject areas

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

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