Atomic and magnetic configurational energetics by the generalized perturbation method

Publication: Research - peer-reviewJournal article – Annual report year: 2004

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It is shown that, using the generalized perturbation method (GPM) with screened Coulomb interactions that ensures its consistency with the force theorem, one is able to obtain effective interactions that yield an accurate and physically transparent description of configurational energetics in the framework of the Korringa-Kohn-Rostoker method within the atomic sphere and coherent potential approximations. This is demonstrated with calculations of ordering energies, short-range order parameters, and transition temperatures in the CuZn, CuAu, CuPd, and PtCo systems. Furthermore, we show that the GPM can be used to obtain Heisenberg exchange interaction parameters, which, for instance, capture very well the magnetic configurational energy in bcc Fe.
Original languageEnglish
JournalPhysical Review B (Condensed Matter and Materials Physics)
Publication date2004
Volume70
Issue12
Pages125115
ISSN1098-0121
DOIs
StatePublished

Bibliographical note

Copyright (2004) American Physical Society.

CitationsWeb of Science® Times Cited: 70

Keywords

  • ELECTRONIC-STRUCTURE, ANOMALOUS TEMPERATURE-DEPENDENCE, DENSITY-FUNCTIONAL THEORY, AUGMENTED-WAVE METHOD, TRANSITION-METAL ALLOYS, COHERENT-POTENTIAL-APPROXIMATION, RANDOM SUBSTITUTIONAL ALLOYS, DIFFUSE-SCATTERING INTENSITY, EFFECTIVE CLUSTER INTERACTIONS, SHORT-RANGE ORDER
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