1. Misorientation control and functionality design of nanopillars in self-assembled perovskite-spinel heteroepitaxial nanostructures.
- Author
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Liao SC, Tsai PY, Liang CW, Liu HJ, Yang JC, Lin SJ, Lai CH, and Chu YH
- Subjects
- Macromolecular Substances chemistry, Materials Testing, Molecular Conformation, Particle Size, Surface Properties, Calcium Compounds chemistry, Crystallization methods, Nanostructures chemistry, Nanostructures ultrastructure, Oxides chemistry, Titanium chemistry
- 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.
- Published
- 2011
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