Neutron-scattering studies of the pressure effect on the magnetic transition in Ho(Co0.9Ga0.1)2

A. Podlesnyak, A. Teplykh, P. Teplykh, A. Krivoshchekov, R. Sadykov

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2 Scopus citations

Abstract

Neutron powder diffraction was employed to study for the first time the pressure effect on the magnetic transition in the pseudo-binary Laves-phase compound Ho(Co0.9Ga0.1)2 and to determine the magnetic moments of the Ho- and Co-subsystems. The pressure effect on T c is found to be negative and extremely large, namely ∂T c/∂p ∼ - 3.4 K/kbar. The values of the magnetic moments of the Ho and Co ions are found to be μHo ∼ 9.7μ B/atom, μCo ∼ 1.2,μB/atom at p = 0 and μHo ∼ 9.3μB/atom, μCo ∼ 0.7μB/atom at 5 kbar.

Original languageEnglish
Pages (from-to)e143-e146
JournalPhysica B: Physics of Condensed Matter
Volume350
Issue number1-3 SUPPL. 1
DOIs
StatePublished - Jul 15 2004
Externally publishedYes

Funding

The authors are grateful to G. Yve for collaboration in the sample synthesis, N. Baranov, A. Pirogov and A. Daoud-Aladine for the fruitful discussions. This work was performed at the spallation neutron source SINQ, Paul Scherrer Institut, Villigen, Switzerland. Financial support by the Swiss National Science Foundation through both Grant SCOPES No. 7 IP 65598 and the NCCR MaNEP is gratefully acknowledged.

Keywords

  • Laves-phase compounds
  • Magnetic transitions
  • Pressure effects

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