Microstructural Control of the TiO_2-SnO_2 Binary System and Synthesis of SnO_2 Nanowhiskers by Microwave Irradiation

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SnO<SUB>2</SUB> single crystals (columnar crystals and silver grass-like nanowhiskers) were synthesized by selective microwave heating of a TiO<SUB>2</SUB>-SnO<SUB>2</SUB> mixture. The shape of the as-grown SnO<SUB>2</SUB> crystals is strongly dependent on the atmosphere during microwave irradiation. This is due to the difference in growth mechanisms, as revealed by in-situ surface observation under microwave irradiation, in addition to scanning and transmission electron microscopy observations of irradiated specimens. In a N<SUB>2</SUB> atmosphere, silver grass-like SnO<SUB>2</SUB> nanowhiskers were obtained. On the other hand, columnar SnO<SUB>2</SUB> crystals were obtained in air or an O<SUB>2</SUB> atmosphere. Photoluminescence and absorption spectra of the as-grown SnO<SUB>2</SUB> crystals were examined. Based on the analysis of a TiO<SUB>2</SUB>-SnO<SUB>2</SUB> pellet, it was found that the bottom was selectively heated, and SnO<SUB>2</SUB> sublimated by microwave irradiation. A density gradient texture of the sample pellet was formed.

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  • Materials transactions  

    Materials transactions 49(4), 879-884, 2008-04-01 

    The Japan Institute of Metals and Materials

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各種コード

  • NII論文ID(NAID)
    10021146138
  • NII書誌ID(NCID)
    AA1151294X
  • 本文言語コード
    ENG
  • 資料種別
    SHO
  • ISSN
    13459678
  • NDL 記事登録ID
    9447685
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z53-J286
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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