Defect Interactions, Extended Defects and Non-Stoichiometry in Ceramic Oxides
Non-stoichiometry in ceramic oxides is usually accommodated structurally through the incorporation of lattice defects. Except in regions very close to stoichiometry, these point defects tend to aggregate into clusters, or extended defects. In this presentation we discuss the energetics of the interactions giving rise to these extended defects from the point of view of atomistic computer-based simulations.
KeywordsPoint Defect Extended Defect Defect Pair Defect Interaction Anion Ratio
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- 1.S.M. Tomlinson, C.R.A. Catlow and J.H. Harding, in: “Transport in Non-Stoichiometric Compounds”, eds. G. Simkovich and V.S. Stubican, pp 539–550, Plenum Press NY (1985).Google Scholar
- 4.A.N. Cormack, C.M. Freeman, R.L. Royle and C.R.A. Catlow, in: “Non-Stoichiometric Compounds”, eds. C.R.A. Catlow and W.C Mackrodt, Adv. in Ceramics, 23, 307–329 (1987).Google Scholar
- 5.A. Dwivedi and A.N. Cormack, in preparation.Google Scholar
- 6.C.R.A. Catlow, A.V. Chadwick, A.N. Cormack, G.N. Greaves, M. Leslie and M.L. Moroney, in: “Defect Properties and Processing of High-Technology Ceramics”, MRS Symposia Proc. 60, 173–178 (1986).Google Scholar
- 9.A. Dwivedi and A.N. Cormack, in preparation.Google Scholar
- 10.Y.H. Han, M.P. Harmer, Y.H. Hu and D.M. Smyth, in: “Transport in Non-Stoichiometric Compounds”, eds. G.Simkovich and V.S. Stubican, pp 73–85, Plenum Press, NY (1985).Google Scholar
- 13.K.R. Udayakumar and A.N. Cormack, J. Phys. Chem. Solids, in press (1988).Google Scholar
- 14.K.R. Udayakumar and A.N. Cormack, J. Amer. Ceram. Soc. Communications, in press (1988).Google Scholar
- 16.R. Ward and A. N. Cormack, unpublished results.Google Scholar