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Abstract <p>Complex structural studies of nanosized bismuth-doped yttrium iron garnet (BYIG) films have been performed using X-ray diagnostics, scanning/transmission electron microscopy, and energy-dispersive X-ray microanalysis. The crystal structure of the film–substrate interface and near-surface layers, along with the change in the interplanar distance over the film thickness, have been determined. The following features of the film microstructure were revealed: the presence of pores, the absence of misfit dislocation at the interface, the formation of maghemite (γ-Fe<sub>2</sub>O<sub>3</sub>) particles on the film surface, and a decrease in the Bi content towards the film surface. Suggestions about the influence of the Bi content on the magneto-optical properties in dependence of the film thickness are made.</p>

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Microstructure of Bismuth-Doped Yttrium Iron Garnet Thin Films

  • 期刊论文

  • 发表日期：

    2025年6月1日

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  • I. A. Subbotin,
  • E. M. Pashaev,
  • A. O. Belyaeva,
  • I. N. Trunkin,
  • S. S. Dubinin,
  • K. A. Merentsova,
  • M. S. Artemyev,
  • A. P. Nosov,
  • A. L. Vasiliev

摘要

Abstract

Complex structural studies of nanosized bismuth-doped yttrium iron garnet (BYIG) films have been performed using X-ray diagnostics, scanning/transmission electron microscopy, and energy-dispersive X-ray microanalysis. The crystal structure of the film–substrate interface and near-surface layers, along with the change in the interplanar distance over the film thickness, have been determined. The following features of the film microstructure were revealed: the presence of pores, the absence of misfit dislocation at the interface, the formation of maghemite (γ-Fe2O3) particles on the film surface, and a decrease in the Bi content towards the film surface. Suggestions about the influence of the Bi content on the magneto-optical properties in dependence of the film thickness are made.