Preparation of polycrystalline Bi3Fe5O12 garnet films

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  • T. Okuda
    Electrotechnical Laboratory, Tsukuba-shi 305, Japan
  • T. Katayama
    Electrotechnical Laboratory, Tsukuba-shi 305, Japan
  • K. Satoh
    School of Electrical Engineering, Meiji University, Kawasaki-shi 214, Japan
  • H. Yamamoto
    School of Electrical Engineering, Meiji University, Kawasaki-shi 214, Japan

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<jats:p>Polycrystalline films of nonthermodynamical garnet Bi3Fe5O12 were synthesized by direct epitaxial growth from the vapor phase. Polycrystalline thin layers of various kinds of thermodynamical garnets prepared on fused quartz substrates were employed as the substrate materials. The saturation magnetization of the film grown onto the polycrystalline GGG layer was 140 mT at 5 K. The films showed quite large magneto-optical effects. In the film on the GGG layer, the Faraday rotation angle at a wavelength of 633 nm was −5.5 deg/μm and the magneto-optical Kerr rotation angle at 455 nm was −0.9°.</jats:p>

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