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Details of Grant 

EPSRC Reference: GR/J31629/01
Title: THE ROLE OF DEFECTS & DEFECT CLUSTERS IN THE MICROSTRUCTURAL EVOLUTION OF ELECTRONIC CERAMICS
Principal Investigator: Grimes, Professor RW
Other Investigators:
Lee, Professor WE
Researcher Co-Investigators:
Project Partners:
Department: Davy Faraday Research Laboratory
Organisation: Royal Institution of Great Britain
Scheme: Standard Research (Pre-FEC)
Starts: 14 February 1994 Ends: 13 February 1997 Value (£): 122,529
EPSRC Research Topic Classifications:
Materials Characterisation
EPSRC Industrial Sector Classifications:
Related Grants:
Panel History:  
Summary on Grant Application Form
The project aims to determine the influence that point defect energetics have on the microstructural evolution of a range of electronic ceramics by employing the unique combination of transmission electron microscopy and atomistic simulation calculations. The recent dramatic increases in computational power mean that atomistic calculations of large defect ensembles and their energetics in the perfect lattice, on a surface or grain boundary and adjacent to planar defects such as stacking faults, are now possible. Similarly, complex microscopy images can now be generated from atomic coordinate and other input data and directly compared to the experimental images. The materials we will consider are AIN, BaTiO3 and ZnO. Each has important applications in the electronics industry and for each, a critical processing parameter is the control of impurities or dopant ions to obtain the desired properties. This study will have three benefits. First, a number of important materials processing problems will be addressed. Second, the innate power of our combined theoretical and experimental procedure will be demonstrated. Third, the basic materials science that underpins the influence that point defects have on microstructural evolution will become clearer.
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Organisation Website: http://www.rigb.org