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Substrate Effect on the Ferromagnetic Resonance Linewidth in Yttrium Iron Garnet Epilayers

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Abstract

The structural perfection of gadolinium gallium garnet (GGG) substrates was shown to have a strong effect on the ferromagnetic resonance (FMR) linewidth in the yttrium iron garnet (YIG) epilayers. The most detrimental imperfections are dislocation pileups and iridium inclusions. A substrate preparation procedure was proposed which ensures the growth of YIG layers 4.7–5 μm in thickness, with an FMR linewidth of 24–40 A/m. YIG layers up to 70 μm in thickness were grown using lattice-matched iron garnet buffer layers.

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Authors and Affiliations

  1. Lviv State Polytechnical University, ul. St. Bandery 12, Lviv, 79013, Ukraine

    S. I. Yushchuk, P. S. Kostyuk & V. I. Loboiko

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  1. S. I. Yushchuk
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  2. P. S. Kostyuk
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  3. V. I. Loboiko
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Yushchuk, S.I., Kostyuk, P.S. & Loboiko, V.I. Substrate Effect on the Ferromagnetic Resonance Linewidth in Yttrium Iron Garnet Epilayers. Inorganic Materials 38, 179–181 (2002). https://doi.org/10.1023/A:1014077430105

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  • DOI: https://doi.org/10.1023/A:1014077430105

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