R Sbiaa, R.
, Shaw, J.
, Nembach, H.
, Al Bahri, M.
, Ranjbar, M.
, ?kerman, J.
and Piramanayagam, S.
(2016),
Ferromagnetic resonance measurements of (Co/Ni/Co/Pt) multilayers with perpendicular magnetic anisotropy, Journal of Physics D-Applied Physics, [online], https://doi.org/10.1088/0022-3727/49/42/425002, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=921059
(Accessed April 24, 2024)
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Ferromagnetic resonance measurements of (Co/Ni/Co/Pt) multilayers with perpendicular magnetic anisotropy
Published
Author(s)
R R Sbiaa, , , M Al Bahri, M Ranjbar, J. ?kerman, S. N. Piramanayagam
Abstract
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 μ0Hk = 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.Citation
Journal of Physics D-Applied Physics
Volume
49
Pub Type
Journals
Download Paper
Keywords
Ferromagnetic resonance, perpendicular anisotropy, magnetic damping, magnetic force microscopy, magnetic tunnel junctions
Citation
Created August 19, 2016, Updated October 12, 2021