Highly Ordered and Polycrystalline Graphene on Co(0001) Intercalated by Oxygen

Viktor O. Shevelev, Kirill A. Bokai, Anna A. Makarova, Dmitry Marchenko, Oleg Yu. Vilkov, Vladimir Yu. Mikhailovskii, Denis V. Vyalikh, Dmitry Yu. Usachov

Research output

Abstract

We present a comparative study of oxygen intercalation under polycrystalline and highly ordered graphene samples on the Co(0001) surface, which are relevant for magnetic applications. A comprehensive experimental study by means of microscopic and spectroscopic techniques shows that intercalation leads to hole-doping and decoupling of graphene from the strongly bound cobalt surface. However, only for the polycrystalline graphene samples, the full intercalation was achieved. The kinetics of intercalation, graphene etching, and cobalt oxidation has been thoroughly investigated. The obtained results have allowed us to disclose the key points of the oxygen intercalation process for both highly ordered and strongly disordered graphene on cobalt.

Original languageEnglish
Pages (from-to)17103-17110
Number of pages8
JournalJournal of Physical Chemistry C
Volume124
Issue number31
Early online date10 Jul 2020
DOIs
Publication statusPublished - 6 Aug 2020

Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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