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 journalArticle

208 Citations (Scopus)

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 languageEnglish (US)
Pages (from-to)1401-1407
Number of pages7
JournalNano letters
Volume6
Issue number7
DOIs
StatePublished - Jul 1 2006

Fingerprint

Perovskite
spinel
Nanostructures
Substrates
matrices
Interfacial energy
Crystal orientation
surface energy
Volume fraction
Anisotropy
Single crystals
Crystals
anisotropy
single crystals
crystals
spinell
perovskite

All Science Journal Classification (ASJC) codes

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

Cite this

Zheng, H., Zhan, Q., Zavaliche, F., Sherburne, M., Straub, F., Cruz, M. P., ... Ramesh, R. (2006). Controlling self-assembled perovskite-spinel nanostructures. Nano letters, 6(7), 1401-1407. https://doi.org/10.1021/nl060401y
Zheng, Haimei ; Zhan, Qian ; Zavaliche, Florin ; Sherburne, Matt ; Straub, Florian ; Cruz, Maria P. ; Chen, Long Qing ; Dahmen, Uli ; Ramesh, R. / Controlling self-assembled perovskite-spinel nanostructures. In: Nano letters. 2006 ; Vol. 6, No. 7. pp. 1401-1407.
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Zheng, H, Zhan, Q, Zavaliche, F, Sherburne, M, Straub, F, Cruz, MP, Chen, LQ, Dahmen, U & Ramesh, R 2006, 'Controlling self-assembled perovskite-spinel nanostructures', Nano letters, vol. 6, no. 7, pp. 1401-1407. https://doi.org/10.1021/nl060401y

Controlling self-assembled perovskite-spinel nanostructures. / Zheng, Haimei; Zhan, Qian; Zavaliche, Florin; Sherburne, Matt; Straub, Florian; Cruz, Maria P.; Chen, Long Qing; Dahmen, Uli; Ramesh, R.

In: Nano letters, Vol. 6, No. 7, 01.07.2006, p. 1401-1407.

Research output: Contribution to journalArticle

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AU - Zheng, Haimei

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AU - Zavaliche, Florin

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AU - Chen, Long Qing

AU - Dahmen, Uli

AU - Ramesh, R.

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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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Zheng H, Zhan Q, Zavaliche F, Sherburne M, Straub F, Cruz MP et al. Controlling self-assembled perovskite-spinel nanostructures. Nano letters. 2006 Jul 1;6(7):1401-1407. https://doi.org/10.1021/nl060401y