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Parallel computational and experimental studies of the morphological modification of calcium carbonate by cobalt


Braybrook, AL and Heywood, BR and Jackson, RA and Pitt, K, Parallel computational and experimental studies of the morphological modification of calcium carbonate by cobalt, Journal of Crystal Growth, 243, (2) pp. 336-344. ISSN 0022-0248 (2002) [Refereed Article]

DOI: doi:10.1016/S0022-0248(02)01439-2


Crystal growth can be controlled by the incorporation of dopant ions into the lattice and yet the question of how such substituents affect the morphology has not been addressed. This paper describes the forms of calcite (CaCO3) which arise when the growth assay is doped with cobalt. Distinct and specific morphological changes are observed; the calcite crystals adopt a morphology which is dominated by the {01.1} family of faces. These experimental studies paralleled the development of computational methods for the analysis of crystal habit as a function of dopant concentration. In this case, the predicted defect morphology also argued for the dominance of the (01.1) face in the growth form. The appearance of this face was related to the preferential segregation of the dopant ions to the crystal surface. This study confirms the evolution of a robust computational model for the analysis of calcite growth forms under a range of environmental conditions and presages the use of such tools for the predictive development of crystal morphologies in those applications where chemico-physical functionality is linked closely to a specific crystallographic form.

Item Details

Item Type:Refereed Article
Keywords:computer simulation, crystal morphology, habit, metal dopants, surface energy
Research Division:Chemical Sciences
Research Group:Macromolecular and materials chemistry
Research Field:Structure and dynamics of materials
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the chemical sciences
UTAS Author:Heywood, BR (Professor Brigid Heywood)
ID Code:104450
Year Published:2002
Web of Science® Times Cited:39
Deposited By:Research Division
Deposited On:2015-11-11
Last Modified:2015-11-12

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