Walters, J.K. and Honeybone, P.J.R. and Huxley, D.W. and Newport, Robert J. and Howells, W.S. (1994) Structural-Properties Of Amorphous Hydrogenated Carbon .1. A High-Resolution Neutron-Diffraction Study. Physical Review B: Condensed Matter and Materials Physics, 50 (2). pp. 831-838. ISSN 0163-1829. (Full text available)
The structure of samples of amorphous hydrogenated carbon, prepared from acetylene and propane precursors, containing 35 and 32 at.% hydrogen, respectively, was investigated by time-of-flight neutron diffraction in the range 0.2-50 angstrom-1 using the ISIS spallation source. The large dynamic range of the data ensures a real-space resolution sufficient to reveal directly the proportions of sp2 and sp3 hybridized carbon. The results show that, in these hard carbon materials, the carbon-atom sites are predominantly sp2 bonded, and the carbon-carbon single bond:carbon-carbon double bond ratio is about 2.5:1. The detailed information on atomic correlations thus provided is used to discuss current structural models, and in particular the data are used to show that these models require significant modification.
|Additional information:||ISI Document Delivery No.: NX637 Times Cited: 41 Cited Reference Count: 31|
|Divisions:||Faculties > Science Technology and Medical Studies > School of Physical Sciences > Functional Materials Group|
|Depositing User:||J.M. Smith|
|Date Deposited:||12 May 2009 11:29|
|Last Modified:||03 Jun 2014 08:13|
|Resource URI:||http://kar.kent.ac.uk/id/eprint/15991 (The current URI for this page, for reference purposes)|