Perovskite lead zirconium titanate nanorings: Towards nanoscale ferroelectric "solenoids"?

Zhu, X. H. and Evans, P. R. and Byrne, D. and Schilling, A. and Douglas, C. and Pollard, R. J. and Bowman, R. M. and Gregg, J. M. and Morrison, F. D. and Scott, J. F. (2006) Perovskite lead zirconium titanate nanorings: Towards nanoscale ferroelectric "solenoids"? Applied Physics Letters, 89 (12). p. 122913. DOI

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Rings of perovskite lead zirconium titanate (PZT) with internal diameters down to ~5 nm and ring thicknesses of ~5–10 nm have been fabricated and structurally, crystallographically, and chemically characterized using an analytical transmission electron microscope. Ring fabrication involved conformal solution deposition of a thin layer of PZT on the inside of a thin film of anodized aluminum oxide nanopores, and subsequent sectioning of the coated pores perpendicular to their cylinder axes. Although the starting solution used for the solution deposition was made from morphotropic phase boundary PZT, the nanorings were found to be on the zirconium-rich side of the PZT phase diagram. Nevertheless, coatings were found to be of perovskite crystallography. The dimensions of these nanorings are such that they have the potential to demonstrate polarization vortices, as modeled by Naumov et al. [Nature (London) 432, 737 (2004)], and moreover represent the perfect morphology to allow vortex alignment and the creation of the ferroelectric "solenoid" as modeled by Gorbatsevich and Kopaev [Ferroelectrics 161, 321 (1994)]

Item Type: Article
Additional Information: 129913
Uncontrolled Keywords: 2006 AREP IA52 2006 P
Subjects: 03 - Mineral Sciences
Divisions: 03 - Mineral Sciences
Journal or Publication Title: Applied Physics Letters
Volume: 89
Page Range: p. 122913
Identification Number:
Depositing User: Sarah Humbert
Date Deposited: 16 Feb 2009 13:04
Last Modified: 23 Jul 2013 09:54

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