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Increased magnetocr...
Increased magnetocrystalline anisotropy in epitaxial Fe-Co-C thin films with spontaneous strain
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- Reichel, L. (author)
- IFW Dresden
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- Giannopoulos, G. (author)
- Demokritos National Center of Scientific Research, Athens
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- Kauffmann-Weiss, S. (author)
- IFW Dresden
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- Hoffmann, M. (author)
- IFW Dresden
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- Pohl, D. (author)
- IFW Dresden
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- Edström, Alexander (author)
- Uppsala universitet,Materialteori
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- Oswald, S. (author)
- IFW Dresden
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- Niarchos, D. (author)
- Demokritos National Center of Scientific Research, Athens
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- Rusz, Jan (author)
- Uppsala universitet,Materialteori,materials
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- Schultz, L. (author)
- IFW Dresden
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- Fähler, S. (author)
- IFW Dresden
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(creator_code:org_t)
- AIP Publishing, 2014
- 2014
- English.
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In: Journal of Applied Physics. - : AIP Publishing. - 0021-8979 .- 1089-7550. ; 116:21, s. 213901-
- Related links:
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http://arxiv.org/pdf...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Rare earth free alloys are in focus of permanent magnet research since the accessibility of the elements needed for nowadays conventional magnets is limited. Tetragonally strained iron-cobalt (Fe-Co) has attracted large interest as promising candidate due to theoretical calculations. In experiments, however, the applied strain quickly relaxes with increasing film thickness and hampers stabilization of a strong magnetocrys- talline anisotropy. In our study we show that already 2 at% of carbon substantially reduce the lattice relaxation leading to the formation of a spontaneously strained phase with 3% tetragonal distortion. In these strained (Fe0.4Co0.6)0.98C0.02 films, a magnetocrystalline anisotropy above 0.4 MJ/m3 is observed while the large polarization of 2.1 T is maintained. Compared to binary Fe-Co this is a remarkable improve- ment of the intrinsic magnetic properties. In this paper, we relate our experimental work to theoretical studies of strained Fe-Co-C and find a very good agreement.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- Fe-Co
- rare earth free permanent magnet
- magnetocrystalline anisotropy
- tetragonal strain
- DFT
- RHEED
- Fysik med inriktning mot atom- molekyl- och kondenserande materiens fysik
- Physics with spec. in Atomic, Molecular and Condensed Matter Physics
Publication and Content Type
- vet (subject category)
- art (subject category)
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- By the author/editor
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Reichel, L.
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Giannopoulos, G.
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Kauffmann-Weiss, ...
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Hoffmann, M.
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Pohl, D.
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Edström, Alexand ...
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show more...
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Oswald, S.
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Niarchos, D.
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Rusz, Jan
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Schultz, L.
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Fähler, S.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
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Journal of Appli ...
- By the university
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Uppsala University