Fabrication of Arrays of Lead Zirconate Titanate (PZT) Nanodots via Block Copolymer Self-Assembly
Abstract
This Article presents a simple methodology for the fabrication of two-dimensional arrays of lead zirconate titanate (PZT) nanodots on n-doped Si substrates via the directed self-assembly of PS- b -PEO block copolymer templates. The approach produces highly ordered PZT nanodot patterns, with lateral widths and heights as small as 20 and 10 nm, respectively, and a coverage density as high as ∼68 × 10 9 nanodots cm –2 . The existence of a perovskite phase in the nanodots was confirmed by X-ray diffraction and X-ray photoelectron spectroscopy. The piezo-amplitude and ferroelectric domain response obtained from the nanodots, through piezoresponse force microscopy, confirmed the presence of ferroelectricity in the PZT arrays. Notably, PZT nanodots with a thickness ∼10 nm, which is close to the critical size limit of PZT, showed ferroelectric behavior. The presence of a multi-a/c domain structure in the nanodots was attributed to their polycrystalline nature.
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Columnar grain growth in CSD films is usually caused by heterogeneous nucleation at the film-substrate interface.
“Columnar grain growth in CSD films is usually caused by heterogeneous nucleation at the film–substrate interface [34,35,36,37,38,39,40,41,42,43,44,45].”
From Control of Columnar Grain Microstructure in CSD LaNiO3 Films (2023) · cites this paper as [37]
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Control of Columnar Grain Microstructure in CSD LaNiO3 Films
Atanova, A. V., Seregin, D. S., Zhigalina, O. M., Khmelenin, D. N., Orlov, G. A., Turkina, D. I., Sigov, A. S., & Vorotilov, K. A. (2023) · Molecules · doi:10.3390/molecules28041938 · Cited by 5 · see citing works
- Authors
- Varghese, J., Ghoshal, T., Deepak, N., O’Regan, C., Whatmore, R. W., Morris, M. A., & Holmes, J. D.
- Affiliations
- Trinity College Dublin (IE)
- University College Cork (IE)
- Corresponding author
- Holmes, Justin D.
- Venue
- Chemistry of Materials
- Publisher
- American Chemical Society (ACS)
- Published
- 2013-02-28
- Volume
- 25
- Issue
- 8
- Pages
- 1458-1463
- ISSN
- 0897-4756 (ISSN-L)
- 1520-5002
- OpenAlex
- W1977707603
- Cited by
- 34
- References
- 0
- Citations by year
- 2025: 1 · 2023: 3 · 2022: 6 · 2021: 4 · 2020: 1 · 2019: 5 · 2018: 3 · 2016: 5 · 2015: 3 · 2014: 3
- FWCI
- 1.65
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Chemistry of Materials (publishedVersion)
- Arrow@dit (Dublin Institute of Technology) (acceptedVersion)
- Cork Open Research Archive (University College Cork, Ireland) (submittedVersion)
- University of Groningen research database (University of Groningen / Centre for Information Technology) (submittedVersion)
- Topics
- Physical Sciences › Materials Science › Materials Chemistry › Ferroelectric and Piezoelectric Materials
- Physical Sciences › Materials Science › Materials Chemistry › Block Copolymer Self-Assembly
- Physical Sciences › Engineering › Biomedical Engineering › Dielectric materials and actuators
- Keywords
- lead zirconate titanate, block copolymer self-assembly, polystyrene-block-poly(ethylene oxide), directed self-assembly, nanodot arrays, ferroelectricity, perovskite phase, piezoresponse, ferroelectric domains, polycrystalline thin films, critical thickness
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