Extrinsic faulting in $3C$ close packed crystal structures: Computational mechanics analysis
2017
Extrinsic faulting has been discussed previously within the so called difference method and random walk calculation. In this contribution is revisited under the framework of computational mechanics, which allows to derive expressions for the statistical complexity, entropy density and excess entropy as a function of faulting probability. The approach allows to compare the disordering process of extrinsic fault with other faulting types. The {\epsilon}-machine description of the faulting mechanics is presented. Several useful analytical expressions such as probability of consecutive symbols in the Haagg coding is presented, as well as hexagonality. The analytical expression for the pairwise correlation function of the layers is derived and compared to results previously reported. The effect of faulting on the interference function is discussed as related to the diffraction pattern.
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