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Microscopic theory ...
Microscopic theory of magnetism in the magnetocaloric material Fe2P1-xTx (T = B and Si)
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- Delczeg-Czirjak, Erna Krisztina (author)
- KTH,Tillämpad materialfysik
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- Bergqvist, Lars (author)
- KTH,Tillämpad materialfysik
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- Eriksson, Olle (author)
- Uppsala universitet,Materialteori
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Gercsi, Z. (author)
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Nordblad, Per (author)
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Szunyogh, L. (author)
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- Johansson, Börje (author)
- Uppsala universitet,KTH,Tillämpad materialfysik,Materialteori
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- Vitos, Levente (author)
- Uppsala universitet,KTH,Tillämpad materialfysik,Materialteori
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(creator_code:org_t)
- 2012
- 2012
- English.
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In: Physical Review B. Condensed Matter and Materials Physics. - 1098-0121 .- 1550-235X. ; 86:4, s. 045126-
- 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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- Landau phenomenological theory in combination with first-principles calculations was used to reveal the origin of the metamagnetic nature and the unusually strong dependence of the ordering temperature with doping of the Fe2P compound. We show that the magnetism of the two sublattices occupied by Fe atoms has an entwined codependency, which is strongly influenced by alloying. We furthermore demonstrate that a constrained disordered local moment approach combined with Monte Carlo simulations can only reproduce the experimental ordering temperatures in these technologically important prototype alloys for magnetocaloric refrigeration.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Fe2p Single-Crystal
- Metamagnetic Transition
- Phase-Transitions
- Potential Model
- Ferromagnetism
- Metals
- Approximation
- Refrigeration
- Mossbauer
- System
- Physics
Publication and Content Type
- ref (subject category)
- art (subject category)
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