Dove, M. T. and Swainson, I. P. and Powell, B. M. and Tennant, D. C. (2005) Neutron powder diffraction study of the orientational order-disorder phase transition in calcite, CaCO3. Physics and Chemistry of Minerals, 32 (7). pp. 493-503. DOI https://doi.org/10.1007/s00269-005-0026-1
![]() |
PDF
Dove_Swainson_Powell_TennantPhysChemMins32(2005).pdf Restricted to Registered users only Download (602kB) |
Abstract
Neutron powder diffraction studies of calcite on heating towards the orientational order–disorder phase transition show that the phase transition is not a simple analogue of an Ising-like transition, but more similar to a rotational analogue of Lindemann melting. The transition is precipitated by the librational amplitude of the carbonate molecular ions exceeding a critical value rather than a result of a statistical entropy of ‘wrong’ orientations. Using tested interatomic potentials the single-particle orientational potential and nearest neighbour orientational interactions have been calculated.
Item Type: | Article |
---|---|
Uncontrolled Keywords: | 2005 AREP 2005 P IA49 |
Subjects: | 03 - Mineral Sciences |
Divisions: | 03 - Mineral Sciences |
Journal or Publication Title: | Physics and Chemistry of Minerals |
Volume: | 32 |
Page Range: | pp. 493-503 |
Identification Number: | https://doi.org/10.1007/s00269-005-0026-1 |
Depositing User: | Sarah Humbert |
Date Deposited: | 08 Jun 2011 09:54 |
Last Modified: | 23 Jul 2013 09:58 |
URI: | http://eprints.esc.cam.ac.uk/id/eprint/1629 |
Actions (login required)
![]() |
View Item |