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arXiv · 2112.07264

Robust perpendicular magnetic anisotropy in Ce substituted yttrium iron garnet epitaxial thin films

Manik Kuila·Archna Sagdeo·Lanuakum A Longchar·R. J. Choudhary·S. Srinath·V. Raghavendra Reddy
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Abstract

Cerium substituted yttrium iron garnet (Ce:YIG) epitaxial thin films are prepared on gadolinium gallium garnet (GGG) substrate with pulsed laser deposition (PLD). It is observed that the films grown on GGG(111) substrate exhibit perpendicular magnetic anisotropy (PMA) as compared to films grown on GGG(100) substrate. The developed PMA is confirmed from magneto-optical Kerr effect, bulk magnetization and ferromagnetic resonance measurements. Further, the magnetic bubble domains are observed in the films exhibiting PMA. The observations are explained in terms of the growth direction of Ce:YIG films and the interplay of various magnetic anisotropy terms. The observed PMA is found to be tunable with thickness of the film and a remarkable temperature stability of the PMA is observed in all the studied films of Ce:YIG deposited on GGG(111) substrate.

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Manik Kuila, Archna Sagdeo, Lanuakum A Longchar, R. J. Choudhary, S. Srinath, V. Raghavendra Reddy. 2021-12-14. Robust perpendicular magnetic anisotropy in Ce substituted yttrium iron garnet epitaxial thin films. https://doi.org/10.1063/5.0085572

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