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Misorientation control and functionality design of nanopillars in self-assembled perovskite-spinel heteroepitaxial nanostructures.

Authors :
Liao SC
Tsai PY
Liang CW
Liu HJ
Yang JC
Lin SJ
Lai CH
Chu YH
Source :
ACS nano [ACS Nano] 2011 May 24; Vol. 5 (5), pp. 4118-22. Date of Electronic Publication: 2011 Apr 08.
Publication Year :
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.

Details

Language :
English
ISSN :
1936-086X
Volume :
5
Issue :
5
Database :
MEDLINE
Journal :
ACS nano
Publication Type :
Academic Journal
Accession number :
21466204
Full Text :
https://doi.org/10.1021/nn200880t