Hybrid magnetic anisotropy [Co/Ni]/Cu/[Co/Pt] spin-valves
Source abstract
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 tCu = 2.5 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.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnetic properties of thin films · Advanced Memory and Neural Computing · Nanoporous metals and alloys
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (48)
Show source-provided references
1. Complex spin configurations in hybrid magnetic multilayer structures due to mutual spin imprinting10.1103/PhysRevB.94.104415 ↗
2. Exchange coupling in hybrid anisotropy magnetic multilayers quantified by vector magnetometry10.1063/1.4917336 ↗
3. Monte carlo modeling of mixed-anisotropy Co/Ni2/NiFe multilayers10.1109/LMAG.2015.2512530 ↗
4. Spin-torque oscillator with tilted fixed layer magnetization10.1063/1.2955831 ↗
5. Spin-torque oscillator using a perpendicular polarizer and a planar free layer10.1038/nmat1905 ↗
6. Magnetic vortex oscillators10.1088/0022-3727/48/45/453001 ↗
7. Nanoscale switch for vortex polarization mediated by Bloch core formation in magnetic hybrid systems10.1038/ncomms8836 ↗
8. Imaging magnetisation dynamics in nano-contact spin-torque vortex oscillators exhibiting gyrotropic mode splitting10.1088/1361-6463/aa628a ↗
9. Topologically confined vortex oscillations in hybrid [Co/Pd]8-Permalloy structures10.1063/1.4873937 ↗
10. Magnetization reversal via perpendicular exchange spring inFePt/FeRhbilayer films10.1103/PhysRevB.70.104405 ↗
11. Disk recording beyond 100 Gb/in.2: Hybrid recording? (invited)10.1063/1.373356 ↗
12. H.P., Coehoorn R., A Hybrid Recording Method Using Thermally Assisted Writing and Flux Sensitive Detection10.1109/20.908391 ↗
13. Exchange spring media for perpendicular recording10.1063/1.1951053 ↗
14. Microwave Assisted Magnetic Recording10.1109/TMAG.2007.911031 ↗
15. Varvaro · 2016
16. Modelling interfacial coupling in thin film magnetic exchange springs at finite temperature10.1063/1.4826365 ↗
17. Casoli · 2016
18. [Co/Ni]-CoFeB hybrid free layer stack materials for high density magnetic random access memory applications10.1063/1.4945089 ↗
19. Current-induced magnetization reversal in nanopillars with perpendicular anisotropy10.1038/nmat1595 ↗
20. Zero-field precession and hysteretic threshold currents in a spin torque nano device with tilted polarizer10.1088/1367-2630/11/10/103028 ↗
21. Macrospin description of the perpendicular polarizer-planar free-layer spin-torque oscillator10.1103/PhysRevB.78.024436 ↗
22. Modeling of the perpendicular polarizer-planar free layer spin torque oscillator: Micromagnetic simulations10.1103/PhysRevB.78.024437 ↗
23. Interlayer exchange coupling between layers with perpendicular and easy-plane magnetic anisotropies10.1063/1.4960795 ↗
24. Interlayer interaction in multilayer [Co/Pt]n/Pt/Co structures10.1063/1.4967163 ↗
25. Experimental realization of two-dimensional artificial skyrmion crystals at room temperature10.1103/PhysRevB.90.174411 ↗
26. Emergent geometric frustration of artificial magnetic skyrmion crystals10.1103/PhysRevB.94.144405 ↗
27. Skyrmion states in multilayer exchange coupled ferromagnetic nanostructures with distinct anisotropy directions10.1016/j.jmmm.2015.06.017 ↗
28. Magnetic properties and magnetization reversal of thin films and nanodots consisting of exchange-coupled composite co/pd multi-layer and co layer with orthogonal anisotropies10.1109/TMAG.2014.2377011 ↗
29. Modifying exchange-spring behavior of CoPt/NiFe bilayer by inserting a Pt or Ru spacer10.1063/1.4913641 ↗
30. Magnetic skyrmions: from fundamental to applications10.1088/0022-3727/49/42/423001 ↗
31. The design and verification of MuMax310.1063/1.4899186 ↗
32. Effect of cap layer thickness on the perpendicular magnetic anisotropy in top MgO/CoFeB/Ta structures10.1063/1.3621353 ↗
33. Influence of heavy metal materials on magnetic properties of Pt/Co/heavy metal tri-layered structures10.1063/1.4973477 ↗
34. Reversal mode instability and magnetoresistance in perpendicular (Co/Pd)/Cu/(Co/Ni) pseudo-spin-valves10.1063/1.4813393 ↗
35. Magnetostatically driven domain replication in Ni/Co based perpendicular pseudo-spin-valves10.1088/0022-3727/49/41/415004 ↗
36. Theory of interlayer exchange interactions in magnetic multilayers
37. Bruno · 2001
38. Interlayer exchange coupling in Co/Cu/Co films
39. Effect of the crystal structure and interlayer exchange coupling on the coercive force in Co/Cu/Co films10.1134/1.1575333 ↗
40. Magnetoresistance study of Ni80Fe20/Co1/CuAgAu/Co2 asymmetric sandwiches10.1016/S0304-8853(03)00564-X ↗
41. Roughness-induced coupling between ferromagnetic films across an amorphous spacer layer10.1103/PhysRevB.55.12546 ↗
42. Oscillatory Coupling between Ferromagnetic Layers Separated by a Nonmagnetic Metal Spacer10.1103/PhysRevLett.67.1602 ↗
43. Oscillations in exchange coupling and magnetoresistance in metallic superlattice structures: Co/Ru, Co/Cr, and Fe/Cr10.1103/PhysRevLett.64.2304 ↗
44. Effect of the structure and thickness of layers on the magnetic and magnetoresistive properties of Py/Co/Cu/Co nanocrystalline films10.1134/S0031918X07070058 ↗
45. Anisotropic magnetoresistance in ferromagnetic 3d alloys10.1109/TMAG.1975.1058782 ↗
46. Giant magnetoresistance in spin-valve multilayers10.1016/0304-8853(94)00356-4 ↗
47. Current-perpendicular (CPP) magnetoresistance in magnetic metallic multilayers10.1016/S0304-8853(99)00316-9 ↗
48. Microscopic mechanisms of giant magnetoresistance10.1103/PhysRevB.60.6710 ↗