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Probability distribution of substituted Titanium in RT12 (R = Nd, Sm, T = Fe, Co) structures

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arxiv 1804.05608 v1 pith:DTIOIPSG submitted 2018-04-16 cond-mat.mtrl-sci

Probability distribution of substituted Titanium in RT12 (R = Nd, Sm, T = Fe, Co) structures

classification cond-mat.mtrl-sci
keywords probabilitystructuresdistributiondistributionsfilllowerpathsite
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We investigated the atomic fill site probability distributions across supercell structures of RT12-xTi (R=Nd, Sm, T=Fe, Co). We use a combined molecular dynamics and Boltzmann distribution approach to extrapolate the probability distributions for Ti substitution from lower to higher temperatures with an equilibrium condition to assess how temperature affects the predictability of the structures fill path. It was found that the Nd and Sm based Fe systems have the highest filling probability path at lower temperatures but the cohesive energy change due to Ti substitution in Sm and Nd based crystals indicates that a more stable system could be achieved with a combination Co and Fe in the transition metal site.

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