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Cubic boron nitride is of potential interest in a number of applications. We have carried out a series of ab initio Hartree-Fock calculations on clusters simulating the local environment of an interstitial in the two types of tetrahedral cavities in the zincblende-structure BN lattice. Neutral interstitial atoms of Li, Be, excess B, C, O, Si, and S have been considered, with relaxation of the first-...
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