Optics and Photonics Society of Iran

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In this paper, we have prepared BixY_3-xFe₅O₁₂ thin films with x=0-3 by sol gel method and spin coating technique. The produced thin films dried at 400 ºC then annealed at 700 ºC for 2 hours in air. By measuring the Faraday effect of thin films, it was shown that the magnetic response of films increases with the amount of bismuth so the best amount was x=1.5. The saturation magnetization and Faraday rotation of the films increase with the amount of doping, so the special Faraday rotation of garnet film with x=1.5 was obtained as 1.13 deg/µm.