期刊
JOURNAL OF PHYSICS D-APPLIED PHYSICS
卷 49, 期 42, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0022-3727/49/42/425002
关键词
magnetic multilayers; perpendicular magnetic anisotropy; magnetic force microscopy; ferromagnetic resonance
资金
- Sultan Qaboos University [IG/SCI/PHYS/14/09]
- Swedish Foundation for Strategic Research (SSF)
- Swedish Research Council (VR)
- Knut and Alice Wallenberg foundation (KAW)
Multilayers of [Co/Ni(t)/Co/Pt](x8) 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 mu H-0(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.
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