High coercive field in TbFe/Fe/TbFe exchange-coupled system with mixed magnetic anisotropy

Mohanty, Jyoti Ranjan (2023) High coercive field in TbFe/Fe/TbFe exchange-coupled system with mixed magnetic anisotropy. Applied Physics A, 129 (6). p. 419. ISSN 0947-8396

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Abstract

In this article, the structural, magnetic, and microscopic properties of exchange-coupled TbFe/Fe/TbFe system are presented. Both TbFe layers exhibit out-of-plane magnetization, and Fe spacer layer (SF) has in-plane magnetization, whereas the entire exchange-coupled system shows considerable enhancement in magnetic properties. By increasing the thickness of SF from 2 to 20 nm, the out-of-plane coercive field and saturation magnetization get enhanced by more than thrice. Perpendicular anisotropy gets tailored as the thickness of SF increases, which also affects the microscopic magnetic domains. Maze-like magnetic domains have been observed at SF = 2 nm; however, domains get diffused and agglomerated upon further increment in thickness of SF . In addition, tilt in effective anisotropy has been achieved in the presence of SF , which is also verified using micromagnetic modeling. The results obtained in TbFe/Fe/TbFe exchange-coupled systems have the potential to be used in magnetic storage technology for hard disk drives.

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IITH Creators:
IITH CreatorsORCiD
Mohanty, Jyoti Ranjanhttps://orcid.org/0000-0001-5410-5412
Item Type: Article
Uncontrolled Keywords: Exchange-coupled magnetic system; Magnetic domains; Micromagnetic simulation; Perpendicular magnetic anisotropy; Rare-earth transition metal thin film; X-ray reflectivity; Binary alloys; Coercive force; Hard disk storage; Iron; Magnetic domains; Magnetic recording; Rare earths; Saturation magnetization; Terbium alloys; Coupled systems; Exchange coupled; Exchange-coupled magnetic system; Magnetic system; Metal thin film; Micromagnetic simulations; Perpendicular magnetic anisotropy; Rare earth transition metal; Rare-earth transition metal thin film; X ray reflectivity; Magnetic anisotropy
Subjects: Physics
Physics > Magnetism
Divisions: Department of Physics
Depositing User: Mr Nigam Prasad Bisoyi
Date Deposited: 06 Jan 2024 12:00
Last Modified: 06 Jan 2024 12:00
URI: http://raiith.iith.ac.in/id/eprint/11783
Publisher URL: https://doi.org/10.1007/s00339-023-06678-y
OA policy: https://v2.sherpa.ac.uk/id/publication/7842
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