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Atomic and magnetic...
Atomic and magnetic configurational energetics by the generalized perturbation method
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- Ruban, Andrei V. (författare)
- KTH,Materialvetenskap,Applied Material Physics, Dept. of Mat. Sci. and Engineering, Royal Institute of Technology, SE-100 44 Stockholm, Sweden
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- Shallcross, Sam (författare)
- Linköpings universitet,Tekniska högskolan,Institutionen för fysik, kemi och biologi,Condensed Matter Theory Group, Physics Department, Uppsala University, S-75121 Uppsala, Sweden
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Simak, S. I. (författare)
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- Skriver, H. L. (författare)
- Ctr. for Atomic-scale Mat. Physics, Physics Department, Technical University of Denmark, DK-2800 Lyngby, Denmark
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(creator_code:org_t)
- 2004
- 2004
- Engelska.
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Ingår i: Physical Review B. Condensed Matter and Materials Physics. - 1098-0121 .- 1550-235X. ; 70:12
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
Nyckelord
- short-range order
- effective cluster interactions
- density-functional theory
- transition-metal alloys
- anomalous temperature-dependence
- coherent-potential-approximation
- diffuse-scattering intensity
- random substitutional alloys
- augmented-wave method
- electronic-structure
- TECHNOLOGY
Publikations- och innehållstyp
- ref (ämneskategori)
- for (ämneskategori)
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