Voltage modulated magnetic anisotropy of rare earth iron garnet thin films on a piezoelectric substrate
Name
252401_1_online.pdf
Description
Published version
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1.61 MB
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Checksum (MD5)
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Author(s)
Gross, Miela J
Misba, Walid A
Hayashi, Kensuke
Bhattacharya, Dhritiman
Gopman, Daniel B
Atulasimha, Jayasimha
Ross, Caroline A
Date Issued
December 19, 2022
Journal
Applied Physics Letters
Publisher
AIP Publishing
Citation
Miela J. Gross, Walid A. Misba, Kensuke Hayashi, Dhritiman Bhattacharya, Daniel B. Gopman, Jayasimha Atulasimha, Caroline A. Ross; Voltage modulated magnetic anisotropy of rare earth iron garnet thin films on a piezoelectric substrate. Appl. Phys. Lett. 19 December 2022; 121 (25): 252401.
Version
Final published version
Abstract
Voltage-tuning of magnetic anisotropy is demonstrated in ferrimagnetic insulating rare earth iron garnets on a piezoelectric substrate, (011)-oriented PMN-PT. A 42 nm thick yttrium-substituted dysprosium iron garnet (YDyIG) film is grown via pulsed laser deposition followed by a rapid thermal anneal to crystallize the garnet into ≈5 μm diameter grains. The annealed polycrystalline film is magnetically isotropic in the film plane with total anisotropy dominated by shape and magnetoelastic contributions. Application of an electric field perpendicular to the substrate breaks the in-plane easy axis along [01[Formula: see text]] and an intermediate axis along [100]. The results are explained in terms of the piezoelectric remanent strain caused by poling the substrate, which is transferred to the YDyIG and modulates the magnetoelastic anisotropy.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Department of Materials Science and Engineering
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DOI of Published Version
https://doi.org/10.1063/5.0128842
