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Enhanced optical mo...
Enhanced optical mode coherence in exchange coupled soft magnetic multilayers
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- Liu, H. (författare)
- Univ S Florida, Dept Phys, Tampa, FL 33620 USA.
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- Ciuciulkaite, Agne (författare)
- Uppsala universitet,Institutionen för fysik och astronomi
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- Kapaklis, Vassilios, 1978- (författare)
- Uppsala universitet,Materialfysik
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- Karaiskaj, D. (författare)
- Univ S Florida, Dept Phys, Tampa, FL 33620 USA.
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- Arena, D. A. (författare)
- Univ S Florida, Dept Phys, Tampa, FL 33620 USA.
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Univ S Florida, Dept Phys, Tampa, FL 33620 USA Institutionen för fysik och astronomi (creator_code:org_t)
- American Institute of Physics (AIP), 2022
- 2022
- Engelska.
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Ingår i: Journal of Applied Physics. - : American Institute of Physics (AIP). - 0021-8979 .- 1089-7550. ; 131:21
- Relaterad länk:
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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 report on an all-optical investigation of coupled spin excitation modes in a series of magnetic trilayer structures. Using time-resolved magneto-optic Kerr effect (tr-MOKE) magnetometry, we observe multi-mode coherent spin excitations in Ni81Fe19/Ru/Co49Fe49V2 multi layers even though the tr-MOKE optical detection is sensitive only to the Co49Fe49V2 magnetization dynamics. Frequency shifts of the different modes indicate that the coupling between the Ni(81)Fe(19 a)nd Co49Fe49V2 layers varies from anti-ferromagnetic to ferromagnetic to uncoupled as the Ru spacer layer thickness is increased from 8 & Aring; to 200 & Aring;. The lifetime of the high frequency coherent oscillations in the Co49Fe49V2 layer increases by over 200%-300% even in the case of uncoupled Ni81Fe19 and Co49Fe49V2 layers with a 200 & Aring; thick Ru spacer. The results suggest an additional method to decrease the damping of high-moment alloys in layered magnetic nanostructures. Published under an exclusive license by AIP Publishing.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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