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Alloying effect on ...
Alloying effect on the order-disorder transformation in tetragonal FeNi
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- Tian, Li-Yun (författare)
- Uppsala universitet,Materialteori,Royal Inst Technol, Dept Mat Sci & Engn, Appl Mat Phys, S-10044 Stockholm, Sweden.
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- Gutfleisch, Oliver (författare)
- Institute of Materials Science, Technische Universität Darmstadt, Darmstadt, Germany,Tech Univ Darmstadt, Inst Mat Sci, D-64287 Darmstadt, Germany.
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- Eriksson, Olle, 1960- (författare)
- Uppsala universitet,Örebro universitet,Institutionen för naturvetenskap och teknik,Division of Materials Theory, Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden,Uppsala Univ, Dept Phys & Astron, Div Mat Theory, Box 516, S-75120 Uppsala, Sweden.;Örebro Univ, Sch Sci & Engn, Örebro, Sweden.,Materialteori
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- Vitos, Levente (författare)
- Uppsala universitet,KTH,Egenskaper,Division of Materials Theory, Department of Physics and Astronomy, Uppsala University, Box 516, Uppsala, 751 20, Sweden,Materialteori,Royal Inst Technol, Dept Mat Sci & Engn, Appl Mat Phys, S-10044 Stockholm, Sweden.;Wigner Res Ctr Phys, Res Inst Solid State Phys & Opt, H-1525 Budapest, Hungary.
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- Tian, Liyun (författare)
- KTH,Materialvetenskap,Division of Materials Theory, Department of Physics and Astronomy, Uppsala University, Sweden
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(creator_code:org_t)
- 2021-03-04
- 2021
- Engelska.
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Ingår i: Scientific Reports. - : Nature Publishing Group. - 2045-2322. ; 11:1
- Relaterad länk:
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Tetragonal ([Formula: see text]) FeNi is a promising material for high-performance rare-earth-free permanent magnets. Pure tetragonal FeNi is very difficult to synthesize due to its low chemical order-disorder transition temperature ([Formula: see text] K), and thus one must consider alternative non-equilibrium processing routes and alloy design strategies that make the formation of tetragonal FeNi feasible. In this paper, we investigate by density functional theory as implemented in the exact muffin-tin orbitals method whether alloying FeNi with a suitable element can have a positive impact on the phase formation and ordering properties while largely maintaining its attractive intrinsic magnetic properties. We find that small amount of non-magnetic (Al and Ti) or magnetic (Cr and Co) elements increase the order-disorder transition temperature. Adding Mo to the Co-doped system further enhances the ordering temperature while the Curie temperature is decreased only by a few degrees. Our results show that alloying is a viable route to stabilizing the ordered tetragonal phase of FeNi.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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