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Title: Phase transformations of nano-sized cubic boron nitride to white graphene and white graphite

We report quantum-mechanical investigations that predict the formation of white graphene and nano-sized white graphite from the first-order phase transformations of nano-sized boron nitride thin-films. The phase transformations from the nano-sized diamond-like structure, when the thickness d > 1.4 nm, to the energetically more stable nano-sized white graphite involve low activation energies of less than 1.0 eV. On the other hand, the diamond-like structure transforms spontaneously to white graphite when d ≤ 1.4 nm. In particular, the two-dimensional structure with single-layer boron nitride, the so-called white graphene, could be formed as a result of such transformation.
Authors:
; ; ; ;  [1] ; ;  [2] ;  [3] ;  [4] ;  [1] ;  [3]
  1. Department of Physics and Engineering Physics, The University of Tulsa, Tulsa, Oklahoma 74104 (United States)
  2. Department of Chemical Engineering, The University of Tulsa, Tulsa, Oklahoma 74104 (United States)
  3. (United States)
  4. Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Kowloon (Hong Kong)
Publication Date:
OSTI Identifier:
22283080
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 9; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; ACTIVATION ENERGY; BORON NITRIDES; DIAMONDS; GRAPHENE; GRAPHITE; NANOSTRUCTURES; PHASE TRANSFORMATIONS; QUANTUM MECHANICS; THIN FILMS; TWO-DIMENSIONAL CALCULATIONS