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Origin of magnetic ...
Origin of magnetic frustrations in Fe-Ni Invar alloys
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- Ruban, Andrei V. (författare)
- KTH,Tillämpad materialfysik,Department of Materials Science and Engineering Royal Institute of Technology, Stockholm
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- Katsnelson, M. I. (författare)
- Institute for Molecules and Materials Radboud University Nijmegen, The Netherlands
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- Olovsson, W. (författare)
- Condensed Matter Theory Group, Department of Physics Uppsala University
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- Simak, S. I. (författare)
- Condensed Matter Theory Group, Department of Physics Uppsala University
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- Abrikosov, Igor, 1965- (författare)
- Linköpings universitet,Tekniska högskolan,Teoretisk Fysik
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(creator_code:org_t)
- 2005
- 2005
- Engelska.
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Ingår i: Physical Review B. Condensed Matter and Materials Physics. - 1098-0121 .- 1550-235X. ; 71:5, s. 4402-
- 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
- Pair exchange parameters J(ij) of the classical Heisenberg Hamiltonian for magnetic interactions in the archetypical Invar system, face centered cubic (fcc) Fe-Ni alloys, are calculated from the first principles. The magnetic structure of Fe-Ni alloys in the region of volumes and electron concentrations related to the Invar effect is highly frustrated. However, the origin of such a frustration in concentrated alloys and in the pure fcc Fe are different. While in Fe it is due to the long-range oscillating J(ij), in alloys with high Ni concentration it is mainly the consequence of a huge dispersion of the nearest-neighbor exchange parameters, caused by the local environment effects.
Nyckelord
- spin dynamics
- exchange interactions
- ferromagnetic metals
- iron
- temperature
- transition
- co
- cu
- NATURAL SCIENCES
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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