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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Kočí, Jan | Prague |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Ali, M. A. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Haskel, Daniel
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Topics
Publications (5/5 displayed)
- 2023Momentum-independent magnetic excitation continuum in the honeycomb iridate H3LiIr2O6citations
- 2022Functional properties of Yttrium Iron Garnett thin films on graphene-coated Gd<sub>3</sub>Ga<sub>5</sub>O<sub>12</sub> for remote epitaxial transfercitations
- 2021Colossal Magnetoresistance without Mixed Valence in a Layered Phosphide Crystalcitations
- 2019Room‐Temperature Ferromagnetic Insulating State in Cation‐Ordered Double‐Perovskite Sr<sub>2</sub>Fe<sub>1+</sub><i><sub>x</sub></i>Re<sub>1−</sub><i><sub>x</sub></i>O<sub>6</sub>Filmscitations
- 2009Stress-induced large Curie temperature enhancement in Fe64Ni36 Invar alloycitations
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article
Functional properties of Yttrium Iron Garnett thin films on graphene-coated Gd<sub>3</sub>Ga<sub>5</sub>O<sub>12</sub> for remote epitaxial transfer
Abstract
Remote epitaxial growth via a graphene interlayer and subsequent mechanical exfoliation of a free-standing membrane is a recently developed technique used to transfer complex oxide thin films onto non-native substrates to form heterogeneously integrated structures for various device applications. One such oxide is Yttrium Iron Garnet (YIG), a material of choice for a wide range of magnetoelectric and spintronic devices owing to its strong magnetic properties and low microwave losses. YIG is predominantly grown on lattice matched Gadolinium Gallium Garnet (GGG) substrates, but by utilizing the remote epitaxy technique, high quality YIG films can be transferred from GGG onto another substrate such as piezoelectric Lithium Niobate (LN). Mechanical strain coupling between the layers and magnetostrictive nature of YIG would allow for the investigation of the interplay in YIG/LN structures leading to the design of novel frequency agile magneto-acoustic devices. In this study functional properties of a YIG film grown using PLD on graphene-coated GGG substrate were investigated and compared to traditional YIG on GGG. Both materials were characterized in terms of crystal structure, surface morphology, FMR and Gilbert damping, and Raman and XAS spectroscopy. Further, it was found that YIG on graphene-coated GGG exhibits significantly higher microwave losses than standard YIG on GGG (FMR linewidth 30.9 vs 2.1 Oe at 10 GHz, and Gilbert damping coefficient 15.4x10<sup>-4</sup> vs 3.4x10<sup>-4</sup> respectively), which was attributed to increased concentration of Fe<sup>2+</sup> cations in YIG/Graphene/GGG. While the damping is higher in these studied films compared to YIG grown directly on GGG, the resulting properties are still very favorable compared to many other competing materials which can be grown without the need for lattice matched substrates, such as metallic ferromagnets.