Transactions of the Materials Research Society of Japan
Online ISSN : 2188-1650
Print ISSN : 1382-3469
ISSN-L : 1382-3469
Regular Papers
Full-Potential KKR calculations for Lattice Distortion around Impurities in Al-based dilute alloys, based on the Generalized-Gradient Approximation
C. LiuM. AsatoN. FujimaT. Hoshino
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2015 年 40 巻 2 号 p. 159-164

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  We calculate systematically the atomic volume changes caused by Sc-Ge impurities in Al, using the formalism given by the Kanzaki model. All the parameters in the Kanzaki model, such as the Hellmann-Feynman (HF) forces and the lattice distortion, are calculated by the ab-initio calculations based on the generalized-gradient approximation in density functional formalism and the full-potential Korringa-Kohn-Rostoker (FPKKR) Green’s function method for point defects. Most of the calculated results agree very well (within the error of 5%) with the available experimental results. We found that the calculated results for the HF forces on the 1st-nearest neighboring host atoms around impurities are strongly correlated with the volume changes per impurity in Al. The magnetism of 3d transition-metal impurities (Cr, Mn, Fe) is also discussed.
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© 2015 The Materials Research Society of Japan
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