Title: Misorientation Control and Functionality Design of Nanopillars in Self-Assembled Perovskite-Spinel Heteroepitaxial Nanostructures
Authors: Liao, Sheng-Chieh
Tsai, Pei-Yu
Liang, Chen-Wei
Liu, Heng-Jui
Yang, Jan-Chi
Lin, Su-Jien
Lai, Chih-Huang
Chu, Ying-Hao
Department of Materials Science and Engineering
Keywords: self-assemble;orientation control;heteroepitaxial;pervoskite;spinel
Issue Date: 1-May-2011
Abstract: In this study, advanced control of crystallographic orientations and magnetic properties of self-assembled nanostructures via rational selections of substrates is demonstrated. We show that in the perovskite spinel BiFeO(3)-CoFe(2)O(4) model system the crystal orientation of self-assembled CoFe(2)O(4) nanopillars can be tuned among (001), (011), and (111), while that of the BiFeO(3) matrix is fixed in (001). Moreover, the resultant CoFe(2)O(4) nanopIllars appear in various shapes: pyramid, roof, and triangular platform, respectively. The tunable nanostructures through this approach enable the control of material functionality such as the magnetic anisotropy of CoFe(2)O(4). This study opens a new pathway for the engineering of self-assembled heteroepitaxial nanostructures.
URI: http://dx.doi.org/10.1021/nn200880t
ISSN: 1936-0851
DOI: 10.1021/nn200880t
Journal: ACS NANO
Volume: 5
Issue: 5
Begin Page: 4118
End Page: 4122
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