Controlling self-assembled perovskite-spinel nanostructures

Haimei Zheng; Qian Zhan; Florin Zavaliche; Matt Sherburne; Florian Straub; Maria P. Cruz; Long Qing Chen; Uli Dahmen; R. Ramesh

doi:10.1021/nl060401y

Controlling self-assembled perovskite-spinel nanostructures

Haimei Zheng, Qian Zhan, Florin Zavaliche, Matt Sherburne, Florian Straub, Maria P. Cruz, Long Qing Chen, Uli Dahmen, R. Ramesh

Research output: Contribution to journal › Article › peer-review

248 Scopus citations

Abstract

We report a discovery that self-assembled perovskite-spinel nanostructures can be controlled simply by selecting single-crystal substrates with different orientations. In a model BiFeO ₃-CoFe ₂O ₄ system, a (001) substrate results in rectangular-shaped CoFe ₂O ₄ nanopillars in a BiFeO ₃ matrix; in contrast, a (111) substrate leads to triangular-shaped BiFeO ₃ nanopillars in a CoFe ₂O ₄ matrix, irrespective of the volume fraction of the two phases. This dramatic reversal is attributed to the surface energy anisotropy as an intrinsic property of a crystal.

Original language	English (US)
Pages (from-to)	1401-1407
Number of pages	7
Journal	Nano letters
Volume	6
Issue number	7
DOIs	https://doi.org/10.1021/nl060401y
State	Published - Jul 1 2006

All Science Journal Classification (ASJC) codes

Bioengineering
Chemistry(all)
Materials Science(all)
Condensed Matter Physics
Mechanical Engineering

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abstract = "We report a discovery that self-assembled perovskite-spinel nanostructures can be controlled simply by selecting single-crystal substrates with different orientations. In a model BiFeO 3-CoFe 2O 4 system, a (001) substrate results in rectangular-shaped CoFe 2O 4 nanopillars in a BiFeO 3 matrix; in contrast, a (111) substrate leads to triangular-shaped BiFeO 3 nanopillars in a CoFe 2O 4 matrix, irrespective of the volume fraction of the two phases. This dramatic reversal is attributed to the surface energy anisotropy as an intrinsic property of a crystal.",

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T1 - Controlling self-assembled perovskite-spinel nanostructures

AU - Zheng, Haimei

AU - Zhan, Qian

AU - Zavaliche, Florin

AU - Sherburne, Matt

AU - Straub, Florian

AU - Cruz, Maria P.

AU - Chen, Long Qing

AU - Dahmen, Uli

AU - Ramesh, R.

PY - 2006/7/1

Y1 - 2006/7/1

N2 - We report a discovery that self-assembled perovskite-spinel nanostructures can be controlled simply by selecting single-crystal substrates with different orientations. In a model BiFeO 3-CoFe 2O 4 system, a (001) substrate results in rectangular-shaped CoFe 2O 4 nanopillars in a BiFeO 3 matrix; in contrast, a (111) substrate leads to triangular-shaped BiFeO 3 nanopillars in a CoFe 2O 4 matrix, irrespective of the volume fraction of the two phases. This dramatic reversal is attributed to the surface energy anisotropy as an intrinsic property of a crystal.

AB - We report a discovery that self-assembled perovskite-spinel nanostructures can be controlled simply by selecting single-crystal substrates with different orientations. In a model BiFeO 3-CoFe 2O 4 system, a (001) substrate results in rectangular-shaped CoFe 2O 4 nanopillars in a BiFeO 3 matrix; in contrast, a (111) substrate leads to triangular-shaped BiFeO 3 nanopillars in a CoFe 2O 4 matrix, irrespective of the volume fraction of the two phases. This dramatic reversal is attributed to the surface energy anisotropy as an intrinsic property of a crystal.

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Controlling self-assembled perovskite-spinel nanostructures

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