This title appears in the Scientific Report :
2020
Please use the identifier:
http://dx.doi.org/10.1016/j.jmmm.2020.166611 in citations.
Please use the identifier: http://hdl.handle.net/2128/24390 in citations.
Effect of random anisotropy on magnetization reversal in dipolarly coupled layered thin films
Effect of random anisotropy on magnetization reversal in dipolarly coupled layered thin films
Magnetic thin films and multilayers offer many novel physical phenomena with tremendous potential for applications. Various growth processes and methods are in place to make homogeneous films. However, dispersion in local easy axes is an inherent issue which may give rise to an effective random anis...
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Personal Name(s): | Chowdhury, N. |
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Bedanta, S. (Corresponding author) / Babu, G. S. / Weber, Alexander / Mattauch, S. / Rath, Ashutosh / Dalai, M. K. / Brückel, Thomas | |
Contributing Institute: |
Streumethoden; JCNS-2 JCNS-FRM-II; JCNS-FRM-II JARA-FIT; JARA-FIT Streumethoden; PGI-4 |
Published in: | Journal of magnetism and magnetic materials, 503 (2020) S. 166611 - |
Imprint: |
Amsterdam
North-Holland Publ. Co.
2020
|
DOI: |
10.1016/j.jmmm.2020.166611 |
Document Type: |
Journal Article |
Research Program: |
Jülich Centre for Neutron Research (JCNS) Materials and Processes for Energy and Transport Technologies Quantum Condensed Matter: Magnetism, Superconductivity Controlling Collective States Controlling Collective States |
Subject (ZB): | |
Link: |
Published on 2020-02-12. Available in OpenAccess from 2022-02-12. Restricted Published on 2020-02-12. Available in OpenAccess from 2022-02-12. Restricted |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/24390 in citations.
Magnetic thin films and multilayers offer many novel physical phenomena with tremendous potential for applications. Various growth processes and methods are in place to make homogeneous films. However, dispersion in local easy axes is an inherent issue which may give rise to an effective random anisotropy in thin film. It is important to investigate the effect of random anisotropy on the magnetic properties of the thin films. In this report we address the aspect of local dispersion induced random anisotropy on magnetization reversal in ferromagnetic (FM)/non-magnetic(NM)/ferromagnetic(FM) stacks. We show that the magnetization reversal is not only governed by the inter-layer interaction but the intrinsic anisotropies also play a crucial role. In this context we have studied the magnetization reversal of Co//Co trilayers with various thicknesses of which acts as a spacer between the two Co layers. Presence of random anisotropy in addition to growth induced uniaxial anisotropy was observed in all the samples. Magneto-optic Kerr effect (MOKE) based microscopy revealed dipolar-coupled layer-by-layer magnetization reversal of the Co layers which was corroborated by polarized neutron reflectometry (PNR) experiments. Micromagnetic simulations confirmed that the presence of random anisotropy in addition to uniaxial anisotropy leads to layer-by-layer magnetization reversal. |