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Reversible exchange...
Reversible exchange bias in epitaxial V2O3/Ni hybrid magnetic heterostructures
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- Ignatova, K. (författare)
- Univ Iceland, Sci Inst, Dunhaga 3, IS-107 Reykjavik, Iceland.
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- Thorsteinsson, E. B. (författare)
- Univ Iceland, Sci Inst, Dunhaga 3, IS-107 Reykjavik, Iceland.
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- Josteinsson, B. A. (författare)
- Univ Iceland, Sci Inst, Dunhaga 3, IS-107 Reykjavik, Iceland.
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- Strandqvist, Nanny (författare)
- Uppsala universitet,Materialfysik
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- Vantaraki, Christina (författare)
- Uppsala universitet,Materialfysik
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- Kapaklis, Vassilios, 1978- (författare)
- Uppsala universitet,Materialfysik
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- Devishvili, A. (författare)
- Uppsala universitet,Institutionen för fysik och astronomi,Inst Laue Langevin, BP 156, F-38042 Grenoble, France.
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- Pálsson, Gunnar K. (författare)
- Uppsala universitet,Materialfysik
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- Arnalds, U. B. (författare)
- Univ Iceland, Sci Inst, Dunhaga 3, IS-107 Reykjavik, Iceland.
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Univ Iceland, Sci Inst, Dunhaga 3, IS-107 Reykjavik, Iceland Materialfysik (creator_code:org_t)
- Institute of Physics (IOP), 2022
- 2022
- Engelska.
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Ingår i: Journal of Physics. - : Institute of Physics (IOP). - 0953-8984 .- 1361-648X. ; 34:49
- Relaterad länk:
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http://epc.ub.uu.se/...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- In this work we present a temperature and angular dependent study of the structural and magnetic properties in highly crystalline V2O3/Ni/Zr magnetic heterostructure films. Our investigation focuses on the coupling between the ferromagnetic Ni layer and V2O3 layer which undergoes an antiferromagnetic/paramagnetic phase transition coupled to the structural phase transition of the material at around 150 K. Structural investigations using x-ray diffraction reveal highly crystalline films of a quality which has previously not been reported in the literature. The Ni layers display an absence of in-plane magnetic anisotropy owing to the highly textured (1 1 1) layering of the Ni films on the underlying V2O3(0 0 0 1) oriented layer. During the transition we observe a strain related enhancement of the coercivity and the onset of a weak exchange bias for cooling under an external magnetic field. Heating the films to above the transition temperature, the exchange bias in the Ni is removed and can be reversed upon subsequent cooling under an inverted external magnetic field. Using temperature dependent polarized neutron reflectometry we investigate the film structure at the interface, capturing the magnetic and nuclear profiles.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- numbers
- V2O3
- phase transition
- exchange bias
- magnetic heterostructure
- thin films
- interface
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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