Growth of Epitaxial Anatase Nano Islands on SrTiO3(001) by Dip Coating
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- 作者：Freddy E. Oropeza ; Kelvin H. L. Zhang ; Anna Regoutz ; Vlado K. Lazarov ; Didier Wermeille ; Christopher G. Poll ; Russell G. Egdell
- 刊名：Crystal Growth & Design
- 出版年：2013
- 出版时间：April 3, 2013
- 年：2013
- 卷：13
- 期：4
- 页码：1438-1444
- 全文大小：456K
- 年卷期：v.13,no.4(April 3, 2013)
- ISSN：1528-7505
文摘
High temperature annealing of ultrathin anatase-TiO2(001) thin films deposited on SrTiO3(001) substrates by a dip coating method leads to the self-assembly of an array of square-shaped epitaxial anatase islands with lateral dimensions of order 150 nm. The procedure developed here provides a very cheap and simple approach to preparation of oriented anatase nanocrystals with a distribution of surface terminations very different to that found in free-standing material. In particular, the {101} facets which are dominant for unsupported nanocrystalline anatase are completely absent, and the (001) islands are instead bounded by sloping {103} side facets.