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Co/Pd -CoFeB exchan...
Co/Pd -CoFeB exchange spring magnets with tunable gap of spin wave excitations
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Tacchi, S. (author)
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- Nguyen, T. N. Anh (author)
- KTH,Material- och nanofysik,Materialvetenskap,Vietnam National University, Viet Nam
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Gubbiotti, G. (author)
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Madami, M. (author)
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Carlotti, G. (author)
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Pini, M. G. (author)
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Rettori, A. (author)
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Fallahi, V. (author)
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- Dumas, Randy K. (author)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU)
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- Åkerman, Johan, 1970 (author)
- KTH,Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),Materialfysik, MF,University of Gothenburg, Sweden
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(creator_code:org_t)
- 2014-11-17
- 2014
- English.
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In: Journal of Physics D-Applied Physics. - : IOP Publishing. - 0022-3727 .- 1361-6463. ; 47:49
- Related links:
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Exchange spring magnets, consisting of a [Co(0.5 nm)/Pd(1 nm)](5) multilayer with perpendicular magnetic anisotropy and a Co20Fe60B20 film with easy plane anisotropy, of variable thickness t(CFB), are investigated using Brillouin light scattering. On reducing t(CFB) in the range 0.8-2.3 nm, the spin-wave frequency gap displays a remarkable increase from nearly 4-48 GHz, reflecting the corresponding rapid growth of the tilting angle of the magnetization with respect to the film normal. These findings are interpreted using a one-dimensional model in which each atomic layer is assumed to be uniformly magnetized, subjected to an effective out-of-plane or easy-plane anisotropy depending on the layer position in the stack, and exchange coupled to its two nearest neighbour atomic layers. With respect to previously investigated [Co/Pd]-NiFe hybrid magnets, a largest frequency tunability, restricted to a narrower range of the soft layer thickness, is observed.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Keyword
- spin waves
- brillouin light scattering
- exchange springs
- magnetic properties of interfaces
- BRILLOUIN LIGHT-SCATTERING
- TORQUE OSCILLATOR
- PHASE-LOCKING
- MAGNETIZATION
- MULTILAYERS
- SYSTEMS
- DRIVEN
- FILMS
- FIELD
- DEVICES
- Physics
- Applied
- spin waves
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Tacchi, S.
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Nguyen, T. N. An ...
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Gubbiotti, G.
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Madami, M.
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Carlotti, G.
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Pini, M. G.
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show more...
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Rettori, A.
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Fallahi, V.
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Dumas, Randy K.
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Åkerman, Johan, ...
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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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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Other Physics To ...
- Articles in the publication
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Journal of Physi ...
- By the university
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University of Gothenburg
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Royal Institute of Technology