Nano Research

, Volume 6, Issue 5, pp 335–347 | Cite as

Growth and low-energy electron microscopy characterization of monolayer hexagonal boron nitride on epitaxial cobalt

  • Carlo M. Orofeo
  • Satoru Suzuki
  • Hiroyuki Kageshima
  • Hiroki Hibino
Research Article


Low-energy electron microscopy (LEEM) has been used to study the structure, initial growth orientation, growth progression, and the number of layers of atomically thin hexagonal boron nitride (h-BN) films. The h-BN films are grown on heteroepitaxial Co using chemical vapor deposition (CVD) at low pressure. Our findings from LEEM studies include the growth of monolayer film having two, oppositely oriented, triangular BN domains commensurate with the Co lattice. The growth of h-BN appears to be self-limiting at a monolayer, with thicker domains only appearing in patches, presumably initiated between domain boundaries. Reflectivity measurements of the thicker h-BN films show oscillations resulting from the resonant electron transmission through quantized electronic states of the h-BN films, with the number of minima scaling up with the number of h-BN layers. First principles density functional theory (DFT) calculations show that the positions of oscillations are related to the electronic band structure of h-BN.


chemical vapor deposition cobalt domain boundaries hexagonal boron nitride low-energy electron microscopy (LEEM) 


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Copyright information

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Carlo M. Orofeo
    • 1
  • Satoru Suzuki
    • 1
  • Hiroyuki Kageshima
    • 1
  • Hiroki Hibino
    • 1
  1. 1.NTT Basic Research LaboratoriesNTT CorporationAtsugi, KanagawaJapan

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