Effect of Magnetic and Nonmagnetic Layers Parameters on Dissipation Processes in Multilayer Nanostructures with Antiferromagnetic Component

Authors T.I. Polek, D.D. Yaremkevich, I.M. Kozak , A.F. Kravets

Institute of Magnetism, National Academy of Sciences of Ukraine, 36-b, Vernadsky Blvd., 03142 Kyiv, Ukraine

Е-mail irinkm@ukr.net
Issue Volume 9, Year 2017, Number 3
Dates Received 03 April 2017; published online 30 June 2017
Citation T.I. Polek, D.D. Yaremkevich, I.M. Kozak, A.F. Kravets, J. Nano- Electron. Phys. 9 No 3, 03001 (2017)
DOI 10.21272/jnep.9(3).03001
PACS Number(s) 76.50. + g, 76.20. + q, 75.75. + a, 61.46. – w
Keywords Multilayer nanostructure, Magnetic relaxation, Spin pumping, Ferromagnetic resonance, Magnetization (18) , Anisotropy (3) .
Annotation The experimental research of magnetic relaxation in multilayer nanostructures AFM/Cu/FM (AFM  Mn80Ir20 – antiferromagnet, FM  Ni80Fe20 – ferromagnetic) with different thicknesses of the magnetic and non-magnetic (Cu) layers were done in this work. Samples were prepared by magnetron sputtering. The effects of the spin pumping in system FM/AFM were observed with the use of ferromagnetic resonance (FMR), namely, on broadening of FMR line. As a result of the work the magnetic parameters of samples, including the value of the magnetization and uniaxial anisotropy were found. By analyzing the experimental data and conducting the simulation the contribution to setting of the magnetization attenuation caused by spin pumping effect (sp) for each series sample was found. It was established that the value sp affects the thickness of the magnetic and (in some cases) nonmagnetic layers. Obtained results are useful for further study of dissipative effects in spintronic devices based on antiferromagnets.

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