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Self-assembling epitaxial growth of a single crystalline CoFe2O4 nanopillar array via dual-target pulsed laser deposition

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Abstract

Magnetic nanopillars are promising for a variety of technological applications, though the template-free fabrication of magnetic nanopillar arrays with good crystallinity and uniform distribution remains a substantial challenge. Herein, we report successful fabrication of a regular array of CoFe2O4 (CFO) nanopillars using an elaborately designed dual-target pulsed laser deposition (PLD) process, which exhibit a truncated pyramid surface with consistent size and orientation as well as uniform distribution. Detailed X-ray diffraction, scanning transmission electron microscopy and X-ray photoelectron spectroscopy demonstrate the high quality nature of the CFO nanopillars, while vibrating sample magnetometer and magnetic force microscopy studies confirm their room temperature magnetism. This dual-target PLD process takes advantage of BiFeO3 decomposition, and the subsequent formation of CFO nanopillars requires no template, giving us a powerful technique to prepare oxide nanopillars with desired composition and functional properties.

Graphical abstract: Self-assembling epitaxial growth of a single crystalline CoFe2O4 nanopillar array via dual-target pulsed laser deposition

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Publication details

The article was received on 12 Feb 2018, accepted on 29 Mar 2018 and first published on 12 Apr 2018


Article type: Communication
DOI: 10.1039/C8TC00774H
Citation: J. Mater. Chem. C, 2018, Advance Article
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    Self-assembling epitaxial growth of a single crystalline CoFe2O4 nanopillar array via dual-target pulsed laser deposition

    G. Zhong, F. An, Y. Bitla, J. Wang, X. Zhong, M. Ye, Y. Zhang, W. Gao, X. Pan, S. Xie and J. Li, J. Mater. Chem. C, 2018, Advance Article , DOI: 10.1039/C8TC00774H

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