Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8154000 | Journal of Magnetism and Magnetic Materials | 2018 | 15 Pages |
Abstract
Thin film multilayer heterostructures consisting of two magnetically coupled stacks, one with in-plane and the second one with out-of-plane magnetic anisotropies, are very promising hybrid magnetic anisotropy materials for spintronics. Here we present results on magnetic and magnetoresistance properties of [Co/Ni]15 (in-plane)/Cu/[Co/Pt]4 (out-of-plane) spin-valves with hybrid magnetic anisotropy. We demonstrate that the saturation field and magnetoresistance depend on the thickness of the copper interlayer (tCu) and they have peak values at tCuâ¯=â¯2.5â¯nm, where the antiferromagnetic coupling is maximum. We reveal that an indirect exchange coupling between [Co/Ni]n and [Co/Pt]m stacks decreases the magnetization switching fields making these systems suitable for low-field sensor, spin torque oscillator and bit patterned media applications.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
A.G. Kolesnikov, Hao Wu, M.E. Stebliy, A.V. Ognev, L.A. Chebotkevich, A.S. Samardak, Xiufeng Han,