Structural Features of the Liquid Plastic Crystal Phase-Transition for Cyclohexane in Bulk and Confined Geometry

Farman, H. and Coveney, F.M. and Dore, J.C. (1992) Structural Features of the Liquid Plastic Crystal Phase-Transition for Cyclohexane in Bulk and Confined Geometry. In: Brommer, P.E. and Buschow, K.H.J. and de Boer, F.R. and Degiorgi, L. and Jochemsen, R. and Wada, H., eds. International Conf On Neutron Scattering ( Icns 91 ). Elsevier, 180. Elsevier Science Bv, Oxford, England pp. 857-860. (The full text of this publication is not available from this repository)

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Official URL
http://dx.doi.org/10.1016/0921-4526(92)90492-B

Abstract

Neutron diffraction measurements have been made for cyclohexane, C6D12 as a function of temperature for bulk samples and also in porous silica with characteristic pore dimensions of approximately 90 angstrom. The results show that the simplifying assumption of cyclohexane as an unhindered rotator are not valid and that complex spatial correlations exist in all phases. The nucleation of the plastic crystal phase is displaced to low temperatures for the confined material and the diffraction pattern of the plastic crystal phase is found to depend on thermal history as well as temperature. The results may be interpreted in terms of defect properties which influence the orientational correlations between neighbouring molecules.

Item Type: Conference or workshop item (Other)
Subjects: Q Science > QC Physics
Divisions: Faculties > Science Technology and Medical Studies > Medway School of Pharmacy
Depositing User: P. Ogbuji
Date Deposited: 05 Sep 2009 17:57
Last Modified: 04 May 2012 14:36
Resource URI: http://kar.kent.ac.uk/id/eprint/22566 (The current URI for this page, for reference purposes)
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