MOD法によるガラス基板上へのBi₃Fe₅O₁₂薄膜の作製と評価

抄録

  Polycrystalline Bi₃Fe₅O₁₂/BiY₂Fe₅O₁₂ magneto-optical thin films were prepared by using a metal-organic decomposition (MOD) method on glass substrates. This was achieved by using YIG buffer layers, that is, BiY₂Fe₅O₁₂ films, which allow bismuth and iron oxides to take a garnet structure. The samples were characterized by X-ray Diffraction (XRD) and magneto-optical spectroscopy. The Faraday rotation of the BIG/Bi-YIG films was 13.55 deg/μm at a wavelength of 525 nm, and a maximum figure of merit of the BIG/Bi-YIG films was obtained at 528 nm. In addition, the well-matched lattice constant of BIG with the relationship between the lattice constant and the Bi-substitution rate was shown by successful crystallization of BIG.