Voltage modulated magnetic anisotropy of rare earth iron garnet thin films on a piezoelectric substrate

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...

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Veröffentlicht in:Applied physics letters 2022-12, Vol.121 (25), p.252401
Hauptverfasser: Gross, Miela J., Misba, Walid A., Hayashi, Kensuke, Bhattacharya, Dhritiman, Gopman, Daniel B., Atulasimha, Jayasimha, Ross, Caroline A.
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container_end_page
container_issue 25
container_start_page 252401
container_title Applied physics letters
container_volume 121
creator Gross, Miela J.
Misba, Walid A.
Hayashi, Kensuke
Bhattacharya, Dhritiman
Gopman, Daniel B.
Atulasimha, Jayasimha
Ross, Caroline A.
description 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 1 ¯] 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.
doi_str_mv 10.1063/5.0128842
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source AIP Journals Complete; Alma/SFX Local Collection
subjects Annealing
Applied physics
Dysprosium
Electric fields
Electric potential
Garnets
Iron
Magnetic anisotropy
Piezoelectricity
Pulsed laser deposition
Pulsed lasers
Substrates
Thin films
Voltage
Yttrium
title Voltage modulated magnetic anisotropy of rare earth iron garnet thin films on a piezoelectric substrate
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