Modification of magnetic properties in Tb–Fe/Gd–Fe/Tb–Fe trilayer using ion-beam irradiation

Sahoo, Ajit Kumar and Talapatra, Abhishek and Mohanty, Jyoti Ranjan and et al, . (2022) Modification of magnetic properties in Tb–Fe/Gd–Fe/Tb–Fe trilayer using ion-beam irradiation. Applied Physics A, 128 (3). ISSN 0947-8396

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This paper presents the modifications of the magnetic properties of Tb–Fe/Gd–Fe/Tb–Fe trilayer, displaying perpendicular magnetic anisotropy in the pristine state. Irradiation with Ar+ ions at a constant fluence of 1014 ions/cm2 with variable incident energies, in the range of 50–150 keV, corresponding to different penetration depths inside the trilayer films, was employed to obtain the tunability in magnetic properties of the trilayer assembly. A spin reorientation transition from perpendicular to the plane of the film could be ascertained even for the lowest energy of irradiation without any major structural modification. The isolated island-like larger magnetic domains, observed for the pristine films, no longer appeared after irradiation. The modifications of magnetic domains and hysteresis loops were understood using micromagnetic simulations, considering the depth-resolved variation of magnetic anisotropies of the top and middle layers. Our work shows a facile route to process anisotropy-engineered magnetic heterostructures using depth-sensitive external perturbation. © 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH, DE part of Springer Nature.

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IITH Creators:
IITH CreatorsORCiD
Mohanty, Jyoti Ranjan
Item Type: Article
Additional Information: The authors acknowledge Inter University Accelerator Centre, New Delhi, India, for providing beamtime at the low energy ion-beam facility (LEIBF) beamline. The financial support was provided by the Science and Engineering Research Board, India, through the grant EMR/2016/006794 and Naval Research Board-Defence Research and Development Organization, India, through the grant NRB/4003/PG/430.
Uncontrolled Keywords: Ferrimagnets; Ion-beam irradiation; Magnetic domains; Perpendicular magnetic anisotropy
Subjects: Others > Metallurgy Metallurgical Engineering
Divisions: Department of Material Science Engineering
Department of Physics
Depositing User: . LibTrainee 2021
Date Deposited: 20 Jul 2022 12:11
Last Modified: 20 Jul 2022 12:11
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