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Competition between...
Competition between Magnetic Structures in the Fe-Rich FCC FeNi Alloys
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- Abrikosov, Igor (författare)
- Linköpings universitet,Teoretisk Fysik,Tekniska högskolan
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- Kissavos, Andreas E. (författare)
- Linköpings universitet,Teoretisk Fysik,Tekniska högskolan
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- Liot, Francois (författare)
- Linköpings universitet,Teoretisk Fysik,Tekniska högskolan
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- Alling, Björn, 1980- (författare)
- Linköpings universitet,Teoretisk Fysik,Tekniska högskolan
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- Simak, Sergey (författare)
- Linköpings universitet,Teoretisk Fysik,Tekniska högskolan
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- Peil, O. (författare)
- Applied Materials Physics, Department of Materials Science and Engineering, Royal Institute of Technology, SE-10044 Stockholm, Sweden
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- Ruban, Andrei V. (författare)
- KTH,Tillämpad materialfysik,Applied Materials Physics, Department of Materials Science and Engineering, Royal Institute of Technology, SE-10044 Stockholm, Sweden
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(creator_code:org_t)
- American Physical Society, 2007
- 2007
- Engelska.
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Ingår i: Physical Review B. Condensed Matter and Materials Physics. - : American Physical Society. - 1098-0121 .- 1550-235X. ; 76:1, s. 014434-
- Relaterad länk:
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https://liu.diva-por... (primary) (Raw object)
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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
- We report on the results of a systematic ab initio study of the magnetic structure of Fe rich fcc FeNi binary alloys for Ni concentrations up to 50 at. %. Calculations are carried out within density-functional theory using two complementary techniques, one based on the exact muffin-tin orbital theory within the coherent potential approximation and another one based on the projector augmented-wave method. We observe that the evolution of the magnetic structure of the alloy with increasing Ni concentration is determined by a competition between a large number of magnetic states, collinear as well as noncollinear, all close in energy. We emphasize a series of transitions between these magnetic structures, in particular we have investigated a competition between disordered local moment configurations, spin spiral states, the double layer antiferromagnetic state, and the ferromagnetic phase, as well as the ferrimagnetic phase with a single spin flipped with respect to all others. We show that the latter should be particularly important for the understanding of the magnetic structure of the Invar alloys.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- Iron alloys
- nickel alloys
- ferromagnetic materials
- magnetic structure
- ab initio calculations
- density functional theory
- linear muffin-tin orbital method
- local moments
- Physics
- Fysik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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