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Impact of ferromagn...
Impact of ferromagnetic layer thickness on the spin pumping in Co60Fe20B20/Ta bilayer thin films
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- Hait, S. (author)
- Indian Inst Technol Delhi, Thin Film Lab, New Delhi 110016, India.
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- Husain, S. (author)
- Univ Paris Saclay, CNRS, Thales, Unite Mixte Phys, F-91767 Palaiseau, France.
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- Gupta, N. K. (author)
- Indian Inst Technol Delhi, Thin Film Lab, New Delhi 110016, India.
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- Behera, Nilamani (author)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),Univ Gothenburg, Dept Phys, S-41296 Gothenburg, Sweden.
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- Kumar, Ankit (author)
- Uppsala universitet,Fasta tillståndets fysik
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- Gupta, Rahul (author)
- Uppsala universitet,Fasta tillståndets fysik
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- Barwal, V. (author)
- Indian Inst Technol Delhi, Thin Film Lab, New Delhi 110016, India.
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- Pandey, L. (author)
- Indian Inst Technol Delhi, Thin Film Lab, New Delhi 110016, India.
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- Svedlindh, Peter (author)
- Uppsala universitet,Fasta tillståndets fysik
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- Chaudhary, S. (author)
- Indian Inst Technol Delhi, Thin Film Lab, New Delhi 110016, India.
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Indian Inst Technol Delhi, Thin Film Lab, New Delhi 110016, India Univ Paris Saclay, CNRS, Thales, Unite Mixte Phys, F-91767 Palaiseau, France. (creator_code:org_t)
- 2021-04-17
- 2021
- English.
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In: Journal of Materials Science-Materials in Electronics. - : Springer Science and Business Media LLC. - 0957-4522 .- 1573-482X. ; 32, s. 12453-12465
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Abstract
Subject headings
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- We report the tuneable spin angular momentum transfer (spin pumping) from Co60Fe20B20 (CFB) amorphous alloy into the Ta heavy metal nanolayers. All the films are grown on Si (100) substrate at room temperature using ion-beam sputtering technique. Structural studies reveal that the grown Ta films over amorphous CFB are crystalline even at ultrathin regime. The bilayers possess very low interface roughness (< 0.5 nm) and are continuous throughout the thickness range. Comparative analysis of the spin pumping in CFB (4, 6 and 8 nm) as a function of the Ta thickness (vary from 1 to 10 nm in step of 1 nm) has been performed employing ferromagnetic resonance (FMR) spectroscopy. It is observed that the effective damping increase exponentially with the increase of Ta, (i.e. follows ballistic spin transport) in two series of CFB (4 nm)/Ta (0-10 nm) and CFB(6 nm)/Ta (0-10 nm) bilayers, which is characteristic of normal spin pumping. However, the anomalous behaviour has been observed for CFB (8 nm)/Ta (0-10 nm) bilayer series where the spin current generated in Ta with the thicker CFB behaves oppositely. The results demonstrate the strong dependence of ferromagnet thickness on the spin pumping into the Ta nanolayers. This study paves the way to choose suitable ferromagnetic layer thickness for spin current-induced switching applications in spintronics.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- beta-ta
- system
- cofeb
- hall
- Engineering
- Materials Science
- Physics
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Hait, S.
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Husain, S.
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Gupta, N. K.
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Behera, Nilamani
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Kumar, Ankit
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Gupta, Rahul
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show more...
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Barwal, V.
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Pandey, L.
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Svedlindh, Peter
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Chaudhary, 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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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Materials Engine ...
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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 ...
- Articles in the publication
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Journal of Mater ...
- By the university
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University of Gothenburg
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Uppsala University