Title: | Self-assembled perovskite-spinel heterostructure on a highly distorted substrate |
Authors: | Zhu, Y. M. Ke, D. Yu, R. Hsieh, Y. H. Liu, H. J. Liu, P. P. Chu, Y. H. Zhan, Q. 材料科學與工程學系 Department of Materials Science and Engineering |
Issue Date: | 18-Mar-2013 |
Abstract: | The pattern configuration and interface structure in epitaxial BiFeO3-CoFe2O4 heterostructures grown on (010) pc NdGaO3 substrates have been investigated systematically by transmission electron microscopy and chemical analysis. The crystal orientation of CoFe2O4 variants was tuned to [111](CFO), while BiFeO3 kept [010](pc) matching the substrate. Triangular prism-shaped CoFe2O4 embedded in the BiFeO3 matrix grew as an equilibrium island mode with {111}(CFO) as its surfaces and interfaces. Two types of BiFeO3-CoFe2O4 orientation relationships were determined as (001)[010](BFO)//(0-22)[111](CFO) and (101)[010](BFO)//(similar to 220)[111](CFO). The results reveal that the dominant factors controlling the growth orientation of the present vertical heterostructures are surface energy anisotropy and atomic structure continuity. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4796037] |
URI: | http://dx.doi.org/10.1063/1.4796037 http://hdl.handle.net/11536/21377 |
ISSN: | 0003-6951 |
DOI: | 10.1063/1.4796037 |
Journal: | APPLIED PHYSICS LETTERS |
Volume: | 102 |
Issue: | 11 |
End Page: | |
Appears in Collections: | Articles |
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