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Title: Single-crystal cubic boron nitride thin films grown by ion-beam-assisted molecular beam epitaxy

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4867353· OSTI ID:22283049
; ; ; ;  [1]
  1. NTT Basic Research Laboratories, NTT Corporation 3-1 Morinosato–Wakamiya, Atsugi, Kanagawa 243-0198 (Japan)

We investigated the formation of cubic boron nitride (c-BN) thin films on diamond (001) and (111) substrates by ion-beam-assisted molecular beam epitaxy (MBE). The metastable c-BN (sp{sup 3}-bonded BN) phase can be epitaxially grown as a result of the interplay between competitive phase formation and selective etching. We show that a proper adjustment of acceleration voltage for N{sub 2}{sup +} and Ar{sup +} ions is a key to selectively discriminate non-sp{sup 3} BN phases. At low acceleration voltage values, the sp{sup 2}-bonded BN is dominantly formed, while at high acceleration voltages, etching dominates irrespective of the bonding characteristics of BN.

OSTI ID:
22283049
Journal Information:
Applied Physics Letters, Vol. 104, Issue 9; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
Country of Publication:
United States
Language:
English