Perovskite lead zirconium titanate nanorings: Towards nanoscale ferroelectric

Xinhua Zhu, Paul Evans, D. Byrne, Alina Schilling, C. Douglas, Robert Pollard, Robert Bowman, Marty Gregg, F.D. Morrison, J.F. Scott

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)


Rings of perovskite lead zirconium titanate (PZT) with internal diameters down to similar to 5 nm and ring thicknesses of similar to 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 [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)].
Original languageEnglish
Article number122913
Pages (from-to)129913-1-129913-3
Number of pages3
JournalApplied Physics Letters
Issue number12
Publication statusPublished - Sept 2006

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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