標題: Orientation-tuning in self-assembled heterostructures induced by a buffer layer
作者: Zhu, Yuanmin
Liu, Pingping
Yu, Rong
Hsieh, Ying-Hui
Ke, Dan
Chu, Ying-Hao
Zhan, Qian
材料科學與工程學系
Department of Materials Science and Engineering
公開日期: 2014
摘要: Anisotropic nano-plate structures in self-assembled perovskite-spinel thin films, BiFeO3-NiFe2O4 and BiFeO3-CoFe2O4, which were deposited on (001)(c) SrRuO3/SrTiO3 and DyScO3 substrates, respectively, have been demonstrated using transmission electron microscopy combined with strain analysis. Unlike the unitary cube-on-cube orientation relationship reported widely, the growth direction of the CoFe2O4 and NiFe2O4 plates was tuned to [011](c) while the BiFeO3 matrix kept [001](c) in both systems. In particular, a thin stress-sensitive BiFeO3 buffer layer between the spinel nanostructure and the substrate was introduced for providing a complex strain state in both film systems. The novel orientation tuning and the pattern configuration of the heterostructures are mainly attributed to the strain imposed on the films and the anisotropic ledge growth mechanism of spinels.
URI: http://hdl.handle.net/11536/24318
http://dx.doi.org/10.1039/c3nr06664a
ISSN: 2040-3364
DOI: 10.1039/c3nr06664a
期刊: NANOSCALE
Volume: 6
Issue: 10
起始頁: 5126
結束頁: 5131
顯示於類別:期刊論文


文件中的檔案:

  1. 000335148800016.pdf