Evidence for vortex state in Fe2CoGe thin films using FORC and magnetic imaging

Kumar Roul, Rajesh and Kumar Jana, Apu and Manivel Raja, M. and Arout Chelvane, J. and Jammalamadaka, S Narayana (2023) Evidence for vortex state in Fe2CoGe thin films using FORC and magnetic imaging. Journal of Magnetism and Magnetic Materials, 566. p. 170318. ISSN 0304-8853

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Abstract

We report on the evidence for the vortex state in the thin films of Fe2CoGe through first order reversal curves, magnetic force microscope, longitudinal magneto-optical Kerr effect and micro-magnetic simulations. Phase purity of the films confirmed through X-ray diffraction, which confirms the A2 type disorder Heusler alloy structure. Contour graph of first order reversal curves infers the formation of vortex state that is useful to understand magnetization reversal and switching process. We do observe the vortex state ∼1 μm with in – plane curling of the magnetization using magnetic force microscope phase analysis. We believe that realization of vortex state formation in Fe2CoGe thin films may cater applications in future magnetic data storage and microwave oscillators.

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IITH Creators:
IITH CreatorsORCiD
Jammalamadaka, S Narayanahttp://www.orcid.org/0000-0001-9235-7012
Item Type: Article
Uncontrolled Keywords: First order reversal curves; Magnetic force microscope; Magnetization reversal; MuMax3; Vortex state;Digital storage; Germanium alloys; Magnetic storage; Magnetic thin films; Microscopes; Optical Kerr effect; Vortex flow;First-order reversal curves; Longitudinal magneto-optical kerr effects; Magnetic force microscopes; Magnetic imaging; Magnetization - reversal; Micromagnetic simulations; Mumax3; Phase purity; Thin-films; Vortex state; Magnetization reversal
Subjects: Physics
Physics > Magnetism
Divisions: Department of Physics
Depositing User: Mr Nigam Prasad Bisoyi
Date Deposited: 16 Aug 2023 11:12
Last Modified: 16 Aug 2023 11:12
URI: http://raiith.iith.ac.in/id/eprint/11544
Publisher URL: https://doi.org/10.1016/j.jmmm.2022.170318
OA policy: https://v2.sherpa.ac.uk/id/publication/11433
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