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Antiferromagnet-med...
Antiferromagnet-mediated interlayer exchange : Hybridization versus proximity effect
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- Polishchuk, Dmytr (författare)
- KTH,Nanostrukturfysik,Institute of Magnetism of the NAS of Ukraine and MES of Ukraine, 03142 Kyiv, Ukraine
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- Tykhonenko Polishchuk, Yuliya (författare)
- KTH,Nanostrukturfysik,Institute of Magnetism of the NAS of Ukraine and MES of Ukraine, 03142 Kyiv, Ukraine
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- Lytvynenko, Ya M. (författare)
- Institute of Magnetism of the NAS of Ukraine and MES of Ukraine, 03142 Kyiv, Ukraine; Institut für Physik, Johannes Gutenberg Universität Mainz, D-55128 Mainz, Germany
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- Rostas, A. M. (författare)
- National Institute of Materials Physics, 077125 Bucharest-Magurele, Romania, Magurele
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- Kuncser, V. (författare)
- National Institute of Materials Physics, 077125 Bucharest-Magurele, Romania, Magurele
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- Kravets, Anatolii (författare)
- KTH,Nanostrukturfysik,Institute of Magnetism of the NAS of Ukraine and MES of Ukraine, 03142 Kyiv, Ukraine
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- Tovstolytkin, A. I. (författare)
- Institute of Magnetism of the NAS of Ukraine and MES of Ukraine, 03142 Kyiv, Ukraine; Faculty of Radiophysics, Electronics and Computer Systems, Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska Str., 01601 Kyiv, Ukraine, 64/13 Volodymyrska Str.
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- Gomonay, O. V. (författare)
- Institut für Physik, Johannes Gutenberg Universität Mainz, D-55128 Mainz, Germany
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- Korenivski, Vladislav, Professor (författare)
- KTH,Nanostrukturfysik
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(creator_code:org_t)
- American Physical Society (APS), 2023
- 2023
- Engelska.
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Ingår i: Physical Review B. - : American Physical Society (APS). - 2469-9950 .- 2469-9969. ; 107:22
- Relaterad länk:
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https://doi.org/10.1...
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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
- We investigate the interlayer coupling between two thin ferromagnetic (F) films mediated by an antiferromagnetic (AF) spacer in F∗/AF/F trilayers and show how it transitions between different regimes on changing the AF thickness. Employing layer-selective Kerr magnetometry and ferromagnetic-resonance techniques in a complementary manner enables us to distinguish between three functionally distinct regimes of such ferromagnetic interlayer coupling. The F layers are found to be individually and independently exchange-biased for thick FeMn spacers - the first regime of no interlayer F-F∗ coupling. F-F∗ coupling appears on decreasing the FeMn thickness below 9 nm. In this second regime found in structures with 6.0-9.0-nm-thick FeMn spacers, the interlayer coupling exists only in a finite temperature interval just below the effective Néel temperature of the spacer, which is due to magnon-mediated exchange through the thermally softened antiferromagnetic spacer, vanishing at lower temperatures. The third regime, with FeMn thinner than 4 nm, is characterized by a much stronger interlayer coupling in the entire temperature interval, which is attributed to a magnetic-proximity induced ferromagnetic exchange. These experimental results, spanning the key geometrical parameters and thermal regimes of the F∗/AF/F nanostructure, complemented by a comprehensive theoretical analysis, should broaden the understanding of the interlayer exchange in magnetic multilayers and potentially be useful for applications in spin thermionics.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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