Magnetooptical Properties of Cd_<1-x>Mn_xTe Films Prepared by Ionized Cluster Beam (ICB) Deposition Technique

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  • クラスタイオンビーム (ICB) 法により作製した Cd_<1-x>Mn_xTe 薄膜の磁気光学的特性
  • クラスタ イオン ビーム ( ICB ) ホウ ニ ヨリ サクセイ シタ Cd_<1-x>Mn_xTe ハクマク ノ ジキ コウガクテキ トクセイ

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The optical and magnetooptical properties of Cd_<1-x>Mn_xTe films prepared by ionized cluster beam (ICB) deposition technique were studied. Preparation of these films was made by a simultaneous deposition of CdTe and MnTe clusters. Films with <111> axis preferential orientation were obtained on glass substrates, and epitaxial films were grown on sapphire substrates. The optical band gap increases from 1.5eV to 2.6eV with the increase of composition x, which was controlled by the acceleration voltage. A large dispersion of Faraday rotation is observed near the band gap energy, and the position shifts toward higher photon energy with increasing composition x. For the epitaxial film, the value of the Faraday rotation (θ_Fmax=-3.61×(10)^3deg./cm at H=5kOe) is about two times greater than that for the film deposited on a glass substrate.

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