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Origin of magnetic ...
Origin of magnetic frustrations in Fe-Ni Invar alloys
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- Ruban, Andrei V. (author)
- KTH,Tillämpad materialfysik,Department of Materials Science and Engineering Royal Institute of Technology, Stockholm
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- Katsnelson, M. I. (author)
- Institute for Molecules and Materials Radboud University Nijmegen, The Netherlands
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- Olovsson, W. (author)
- Condensed Matter Theory Group, Department of Physics Uppsala University
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- Simak, S. I. (author)
- Condensed Matter Theory Group, Department of Physics Uppsala University
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- Abrikosov, Igor, 1965- (author)
- Linköpings universitet,Tekniska högskolan,Teoretisk Fysik
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(creator_code:org_t)
- 2005
- 2005
- English.
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In: Physical Review B. Condensed Matter and Materials Physics. - 1098-0121 .- 1550-235X. ; 71:5, s. 4402-
- Related links:
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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
Subject headings
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- 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.
Keyword
- spin dynamics
- exchange interactions
- ferromagnetic metals
- iron
- temperature
- transition
- co
- cu
- NATURAL SCIENCES
Publication and Content Type
- ref (subject category)
- art (subject category)
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