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Physics of Metals and Metallography

, Volume 120, Issue 10, pp 930–935 | Cite as

Magnetic State and Phase Composition of Co3C Nanoparticles

  • K. N. MikhalevEmail author
  • A. Yu. Germov
  • E. Yu. Medvedev
  • A. P. Gerashchenko
  • A. E. Ermakov
  • M. A. Uimin
  • S. I. Novikov
  • T. V. D’yachkova
  • A. P. Tyutyunnik
  • Yu. G. Zainulin
ELECTRICAL AND MAGNETIC PROPERTIES
  • 18 Downloads

Abstract

Nanoparticles Co3C were prepared using solid-phase synthesis under high pressure. The phase composition of the nanoparticles has been analyzed; the magnetization has been measured and 59Со NMR spectra in a local field have been recorded. It is shown that Co3C is a ferromagnet with the Curie temperature TC = 498(10) K. The hyperfine fields and components of electric field gradient tensor were determined for two nonequivalent Co positions in the carbide. The obtained hyperfine fields correspond to the spin state of Co ions S = 1.

Keywords:

magnetization nuclear magnetic resonance carbides magnetic nanoparticles 

Notes

FUNDING

This study was performed in terms of state assignments of the Ministry of Science and Higher Education of the Russian Federation (themes Funktsiya, no. АААА-А19-119012990095-0, Magnit, no. АААА-А18-118020290129-5, and Novye funktsional’nye materially dlya perspektivnykh tekhnologii, no. АААА-А19-119031890025-9). The study was partially supported by the Russian Foundation for Basic Research (project no. 16-02-00416).

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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • K. N. Mikhalev
    • 1
    Email author
  • A. Yu. Germov
    • 1
  • E. Yu. Medvedev
    • 1
  • A. P. Gerashchenko
    • 1
  • A. E. Ermakov
    • 1
  • M. A. Uimin
    • 1
  • S. I. Novikov
    • 1
  • T. V. D’yachkova
    • 2
  • A. P. Tyutyunnik
    • 2
  • Yu. G. Zainulin
    • 2
  1. 1.Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of SciencesEkaterinburgRussia
  2. 2.Institute of Solid State Chemistry, Ural Branch, Russian Academy of SciencesEkaterinburgRussia

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