Ferromagnetic resonance measurements of (Co/Ni/Co/Pt) multilayers with perpendicular magnetic anisotropy

R. Sbiaa, J. M. Shaw, H. T. Nembach, M. Al Bahri, M. Ranjbar, J. Åkerman, S. N. Piramanayagam

Research output: Contribution to journalArticle

6 Citations (Scopus)

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 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.

Original languageEnglish
Article number425002
JournalJournal of Physics D: Applied Physics
Volume49
Issue number42
DOIs
Publication statusPublished - Sep 20 2016

Fingerprint

Ferromagnetic resonance
Magnetic anisotropy
ferromagnetic resonance
Multilayers
anisotropy
magnetic force microscopy
Anisotropy
tunnel junctions
magnetic measurement
torque
Magnetic force microscopy
damping
Magnetoelectronics
Tunnel junctions
magnetic properties
Magnetic properties
Torque
Damping

Keywords

  • ferromagnetic resonance
  • magnetic force microscopy
  • magnetic multilayers
  • perpendicular magnetic anisotropy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

Cite this

Ferromagnetic resonance measurements of (Co/Ni/Co/Pt) multilayers with perpendicular magnetic anisotropy. / Sbiaa, R.; Shaw, J. M.; Nembach, H. T.; Al Bahri, M.; Ranjbar, M.; Åkerman, J.; Piramanayagam, S. N.

In: Journal of Physics D: Applied Physics, Vol. 49, No. 42, 425002, 20.09.2016.

Research output: Contribution to journalArticle

Sbiaa, R. ; Shaw, J. M. ; Nembach, H. T. ; Al Bahri, M. ; Ranjbar, M. ; Åkerman, J. ; Piramanayagam, S. N. / Ferromagnetic resonance measurements of (Co/Ni/Co/Pt) multilayers with perpendicular magnetic anisotropy. In: Journal of Physics D: Applied Physics. 2016 ; Vol. 49, No. 42.
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