Neutron-Diffraction Studies of Network Structure in Amorphous Phosphorus

Farman, Hossein and Blakey, C. and Dore, John C. and Bellissent-Funel, Marie-Claire and Elliott, S.R. (1994) Neutron-Diffraction Studies of Network Structure in Amorphous Phosphorus. Physica Scripta, 49 (5). pp. 634-636. ISSN 0281-1847. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Neutron diffraction studies have been made for three samples of amorphous phosphorus. The structure factor data have been transformed to give the real-space correlation function, d(r). All samples were found to contain a small proportion of hydrogen and corrections were made before the data was analysed. The violet form was found to give a typical amorphous pattern which had a sharp main diffraction peak at 1.1 angstrom-1. On heat-treating the sample, this peak increased in intensity but the rest of the pattern was unaltered. The red-brown form exhibited some Bragg peaks, but the overall shape of the pattern was similar to that of the violet material. The d(r) function exhibits a sharp peak at 2.21 angstrom corresponding to the PP-bondlength and a second peak at 3.45 angstrom defining a mean bond-angle of 102.6-degrees with a spread of 4-degrees. At higher values there is a distinct three-peak characteristic which is not reproduced in current models based on a three-bonded CRN scheme.

Item Type: Article
Subjects: Q Science > QC Physics
Divisions: Faculties > Science Technology and Medical Studies > School of Engineering and Digital Arts
Depositing User: P. Ogbuji
Date Deposited: 29 Jun 2009 21:41
Last Modified: 04 Jul 2014 10:13
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