論文

2012年

Size effect on the structure and optical properties in nanocrystalline SrTiO 3

e-Journal of Surface Science and Nanotechnology
  • Marina Makarova
  • ,
  • Jan Drahokoupil
  • ,
  • Pavlo Bykov
  • ,
  • Alexander Dejneka
  • ,
  • Zdenek Dlabacek
  • ,
  • Lubomir Jastrabik
  • ,
  • Vladimir Trepakov
  • ,
  • Petr Sazama
  • ,
  • Jiri Franc
  • ,
  • Yuji Okawa
  • ,
  • Masakazu Aono

10
開始ページ
406
終了ページ
410
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1380/ejssnt.2012.406

SrTiO 3 nanoparticles can be prospective materials for different physical, chemical and technical applications as dielectric components, materials for catalysis and optics. Particle control may lead to new effects especially when the size becomes comparable with the fundamental dimensional characteristics such as domain size, exciton or electron length, i.e. at the level of nanomaterials. The powders of titanate with perovskite structure and particle size of 5-60 nm were obtained by solvothermal or citrate sol gel methods. The tendency to the lattice constant increase with particle size decrease was observed. However, the dependence of optical gap on the particle size looked unusually which was connected with the structure modifications during sample processing. It was also observed that the finest 5 nm powders contained significant lack of Sr, but perovskite structure was preserved. After thermal treatment TiO 2 formation was found, likely providing a composite with ultrafine SrTiO 3 nanoparticles inside TiO 2 shell. © 2012 The Surface Science Society of Japan.

リンク情報
DOI
https://doi.org/10.1380/ejssnt.2012.406
URL
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84865270056&origin=inward

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