Highly crystalline ruby coating on α-Al2O3 surfaces by flux evaporation

  • TESHIMA Katsuya
    Department of Environmental Science and Technology, Faculty of Engineering, Shinshu University
  • MATSUMOTO Ken-ichi
    Department of Environmental Science and Technology, Faculty of Engineering, Shinshu University
  • KONDO Hitoshi
    Department of Environmental Science and Technology, Faculty of Engineering, Shinshu University Plastic Laminated Package Division, Shinko Electric Industries Co., Ltd.
  • SUZUKI Takaomi
    Department of Environmental Science and Technology, Faculty of Engineering, Shinshu University
  • OISHI Shuji
    Department of Environmental Science and Technology, Faculty of Engineering, Shinshu University

書誌事項

タイトル別名
  • Highly Crystalline Ruby Coating on .ALPHA.-Al2O3 Surfaces by Flux Evaporation
  • Highly crystalline ruby coating on a Al2O3 surfaces by flux evaporation

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A variety of polycrystalline alumina and sapphire surfaces were successfully covered with ruby crystal layers by the isothermal evaporation of MoO3 flux. The grown ruby layers exhibited transparent-red, and the ruby-coated alumina materials showed beauty and luster in the as-grown state without skilled cutting and polishing. For sapphire substrates, the ruby layers were epitaxially grown on their surface. Furthermore, the growth model of ruby layers was discussed, and aluminum molybdate (Al2(MoO4)3) was found to be the intermediate compound for the growth of ruby crystals.<br>

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