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Effects of substitu...
Effects of substitution on the exchange stiffness and magnetization of Co films
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Eyrich, C. (author)
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- Zamani, Atieh (author)
- Uppsala universitet,Materialfysik
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Huttema, W. (author)
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Arora, M. (author)
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Harrison, D. (author)
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Rashidi, F. (author)
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Broun, D. (author)
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Heinrich, B. (author)
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Mryasov, O. (author)
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- Ahlberg, Martina (author)
- Uppsala universitet,Materialfysik
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- Karis, Olof (author)
- Uppsala universitet,Molekyl- och kondenserade materiens fysik
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- Jönsson, Petra E. (author)
- Uppsala universitet,Materialfysik
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From, M. (author)
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Zhu, X. (author)
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Girt, E. (author)
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(creator_code:org_t)
- 2014
- 2014
- English.
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In: Physical Review B. Condensed Matter and Materials Physics. - 1098-0121 .- 1550-235X. ; 90:23, s. 235408-
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- An antiferromagnetically coupled FM/NM/FM (FM = ferromagnet, NM = normal metal) trilayer structure responds to an external magnetic field by the formation of a magnetic-moment spring within the FM layers. We show that the exchange stiffness (A ex) of an FM layer can be determined by fitting the field-dependent magnetization, M(H), of the FM/NM/FM trilayer to a micromagnetic model. Using this method, we have measured the exchange stiffness of thin-film Co alloyed with Cr, Fe, Ni, Pd, Pt, and Ru. The results show that the rate at which a substituent element reduces the exchange stiffness is not directly related to its effect on the magnetization of the alloy. The observed trends have been understood by material-specific modeling based on density functional theory within the local density approximation. The stiffness measurements are in agreement with Brillouin light scattering carried out on thicker Co films.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Eyrich, C.
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Zamani, Atieh
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Huttema, W.
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Arora, M.
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Harrison, D.
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Rashidi, F.
-
show more...
-
Broun, D.
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Heinrich, B.
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Mryasov, O.
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Ahlberg, Martina
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Karis, Olof
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Jönsson, Petra E ...
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From, M.
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Zhu, X.
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Girt, E.
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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 ...
- Articles in the publication
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Physical Review ...
- By the university
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Uppsala University