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Title: Observation of exotic domain structures in ferroelectric nanodot arrays fabricated via a universal nanopatterning approach
Authors: Tian, G
Chen, DY
Fan, H
Li, FL
Fan, Z
Qin, MH
Zeng, M
Dai, JY 
Gao, XS
Liu, JM
Keywords: Nanopatterning
Nanodot array
Vortex domain
Size effect
Issue Date: 2017
Publisher: American Chemical Society
Source: ACS applied materials and interfaces, 2017, v. 9, no. 42, p. 37219-37226 How to cite?
Journal: ACS applied materials and interfaces 
Abstract: We report a facile and cost-competitive nano patterning route, using Ar ion beam etching through a monolayer polystyrene sphere (PS) array placed on a ferroelectric epitaxial thin film, to fabricate ordered ferroelectric nanodot arrays. Using this method, well-ordered BiFeO3 epitaxial nanodots, with tunable sizes from similar to 100 to similar to 900 nm in diameter, have been successfully synthesized. Interestingly, a plethora of exotic nanodomain structures, e.g., stripe domains, vortex and antivortex domains, and single domains, are observed in these nanodots. Moreover, this novel technique has been extended to produce Pb(Zr,Ti)O-3 nanodots and multiferroic composite Co/BiFeO3 nanodots. These observations enable the creation of exotic domain structures and provide a wide range of application potentials for future nanoelectronic devices.
ISSN: 1944-8244
EISSN: 1944-8252
DOI: 10.1021/acsami.7b12605
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