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Three-dimensional heteroepitaxy in self-assembled BaTiO3-CoFe2O4 nanostructures.

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Three-dimensional heteroepitaxy in self-assembled BaTiO3-CoFe2O4 nanostructures.

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Title: Three-dimensional heteroepitaxy in self-assembled BaTiO3-CoFe2O4 nanostructures.
Author: Zheng, H.; Wang, J.; Mohaddes-Ardabili, L.; Wuttig, M.; Salamanca-Riba, L.; Schlom, D. G.; Ramesh, R.
Copyright year: 2004
Abstract: Self-assembled BaTiO3–CoFe2O4 complex oxide nanostructures have been synthesized by pulsed laser deposition. A single ceramic target with a molar ratio of 0.62BaTiO3–0.38CoFe2O4 was used. Spinel CoFe2O4 and perovskite BaTiO3 phases spontaneously separated during heteroepitaxial growth on a single-crystal SrTiO3 (001) substrate. The nanostructures are epitaxial in-plane as well as out-of-plane, with CoFe2O4 nanopillar arrays embedded in a BaTiO3 matrix. The CoFe2O4 nanopillars have uniform size and spacing and nearly circular cross section. As the substrate temperature increases from 750 to 950°C, the average diameter of the pillars increases from ~9 to ~70 nm.
Subject: DRNTU::Engineering::Materials::Nanostructured materials.
Type: Journal Article
Series/ Journal Title: Applied physics letters
School: School of Materials Science and Engineering
Rights: © 2004 American Institute of Physics. This paper was published in Applied Physics Letters and is made available as an electronic reprint (preprint) with permission of American Institute of Physics. The paper can be found at the following DOI: http://dx.doi.org/10.1063/1.1786653. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Version: Published version

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