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Ferromagnetic resonance measurements of (Co/Ni/Co/Pt) multilayers with perpendicular magnetic anisotropy
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2016 (English)In: Journal of Physics D: Applied Physics, ISSN 0022-3727, E-ISSN 1361-6463, Vol. 49, no 42, 425002Article in journal (Refereed) Published
Abstract [en]

Multilayers of [Co/Ni(t)/Co/Pt]×8 with varying Ni thickness were investigated for possible use as a free layer in magnetic tunnel junctions and spintronics devices. The thickness t of the Ni sub-layer was varied from 0.3 nm to 0.9 nm and the resulting magnetic properties were compared with (Co/Ni) and (Co/Pt) multilayers. As determined from magnetic force microscopy, magnetometry and ferromagnetic resonance measurements, all multilayers exhibited perpendicular magnetic anisotropy. Compared with (Co/Pt) multilayers, the sample with t of 0.9 nm showed almost the same anisotropy field of μ 0 H k = 1.15 T but the damping constant was 40% lower. These characteristics make these multilayers attractive for spin torque based magnetoresistive devices with perpendicular anisotropy.

Place, publisher, year, edition, pages
Institute of Physics Publishing (IOPP), 2016. Vol. 49, no 42, 425002
Keyword [en]
ferromagnetic resonance, magnetic force microscopy, magnetic multilayers, perpendicular magnetic anisotropy, Anisotropy, Ferromagnetic materials, Ferromagnetism, Magnetic anisotropy, Magnetism, Multilayers, Nickel, Resonance, Tunnel junctions, Anisotropy field, Damping constants, Ferromagnetic resonance measurements, Magnetic tunnel junction, Magnetoresistive devices, Perpendicular anisotropy, Spintronics device
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-195322DOI: 10.1088/0022-3727/49/42/425002Scopus ID: 2-s2.0-84991202706OAI: oai:DiVA.org:kth-195322DiVA: diva2:1045503
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QC 20161109

Available from: 2016-11-09 Created: 2016-11-02 Last updated: 2016-11-09Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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