Magnetic properties of Co/Ni-based multilayers with Pd and Pt insertion layers
arXiv:2003.14306 · doi:10.1063/5.0010112
Abstract
In this study, the influence of Pd and Pt insertion layers in Co/Ni multilayers (MLs) on their magnetic properties, e.g. magnetic anisotropies, saturation magnetization, coercivity, magnetic domain size, and Curie temperature, is investigated. We compare three series of [Co/Ni/X]N ML systems (X = Pd, Pt, no insertion layer), varying the individual Co layer thickness as well as the repetition number N. All three systems behave very similarly for the different Co layer thicknesses. For all systems, a maximum effective magnetic anisotropy was achieved for MLs with a Co layer thickness between 0.15 nm and 0.25 nm. The transition from an out-of-plane to an in-plane system occurs at about 0.4 nm of Co. While [Co(0.2 nm)/Ni(0.4 nm)]N MLs change their preferred easy magnetization axis from out-of-plane to in-plane after 6 bilayer repetitions, insertion of Pd and Pt results in an extension of this transition beyond 15 repetitions. The maximum effective magnetic anisotropy was more than doubled from 105 kJ/m3 for [Co/Ni]3 to 275 and 186 kJ/m3 for Pt and Pd, respectively. Furthermore, the insertion layers strongly reduce the initial saturation magnetization of 1100 kA/m of Co/Ni MLs and lower the Curie temperature from 720 to around 500 K
References in corpus (13)
- Skyrmions at room temperature : From magnetic thin films to magnetic multilayers
- Additive interfacial chiral interaction in multilayers for stabilization of small individual skyrmion at room temperature
- All-optical control of ferromagnetic thin films and nanostructures
- Measurement of the Spin-Transfer-Torque Vector in Magnetic Tunnel Junctions
- Magneto-ionic Control of Interfacial Magnetism
- Bit Patterned Magnetic Recording: Theory, Media Fabrication, and Recording Performance
- Ferromagnetic resonance study of sputtered Co|Ni multilayers
- Vertically Graded Anisotropy in Co/Pd Multilayers
- Dispersive Stiffness of Dzyaloshinskii Domain Walls
- Spin-torque driven ferromagnetic resonance of Co/Ni synthetic layers in spin valves
- Co/Ni multilayers for spintronics: high spin-polarization and tunable magnetic anisotropy
- Magnetic properties of single atoms of Fe and Co on Ir(111) and Pt(111)
- Seed Layer Impact on Structural and Magnetic Properties of [Co/Ni] Multilayers with Perpendicular Magnetic Anisotropy