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
TL;DR
This study demonstrates the induction and control of perpendicular magnetic anisotropy in Ce:YIG thin films grown on GGG substrates, with tunable properties and temperature stability, advancing magnetic thin film applications.
Contribution
It reports the first observation of tunable perpendicular magnetic anisotropy in Ce:YIG thin films grown on GGG substrates using pulsed laser deposition.
Findings
PMA observed in Ce:YIG films on GGG(111) substrate
PMA is tunable with film thickness
PMA shows remarkable temperature stability
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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