Derivation of Interionic Potentials Using Embedded Quantum-Mechanical Clusters: Cation and Anion Impurities in Mgo

Document Type

Article

Publication Date

1-1-1990

Abstract

The icecap methodology is used to derive mtenonic potentials of some cation and anion impurities in MgO, namely, Li+, Na+, K+, Be2+, H-, S2’, and O2-. Analysis is given of the defect energies obtained by using the derived impurity potentials. Based on the available experimental data, comparison is made to justify the reliability of the derived impurity potential for Be2+. The calculated activation energy for Be2+ diffusion comes out to be 1.54 eV as compared to the experimental value of 1.60 eV, which is considered to be very satisfactory. © 1990, Materials Research Society. All rights reserved.

Publication Title

Journal of Materials Research

Link to Full Text

Share

COinS