By using Buckhigham or Born-Meyer models for ionic interatomic energy. For more details visit:
(1) http://www.scientific.net/AMM.446-447.151
(2) M. Nadeem, M. Akhtar, R. Shaheen, M. Haque and A. Khan, Interatomic Potentials for some Binary Oxides, Journal of Materials Science and Technology, 17 (2001) 638-642.
(3) X. Xia, R. Oldman and R. Catlow, Computational Modelling Study of Bulk and Surface of Yttria-Stabilized Cubic Zirconia, Chemistry Of Materials, 21 (2009) 3576-3585.