Ferroelectric domain periodicities in nanocolumns of single crystal barium titanate

Schilling, A. and Bowman, R. M. and Gregg, J. M. and Catalan, G. and Scott, J. F. (2006) Ferroelectric domain periodicities in nanocolumns of single crystal barium titanate. Applied Physics Letters, 89 (21). 212902 (3 pp.). DOI https://doi.org/10.1063/1.2393145

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A focused ion beam microscope has been used to mill rectangular "picture-frame" shapes from single crystal barium titanate. The lengths of the sides of the picture frames were of the order of 3–5 µm, while the side width and thickness dimensions were of the order of 100–500 nm. Such aspect ratios meant that each of the frame sides approximates to a column with rectangular cross section. Scanning transmission electron microsopy was used to characterize the ferroelectric domain configurations associated with these nanocolumns. It was found that conventional stripe domain patterns occurred in all cases, down to columnar cross-section sizes of the order of ~100×100 nm2. Despite the geometry of the columns rendering the ferroelectric as shape constrained in two dimensions, the domain periodicity was only noticeably sensitive to variations in the magnitude of one of those dimensions. Such observations were rationalized using arguments based on those used by Kittel [Phys. Rev. 70, 965 (1946)] and Mitsui and Furuichi [Phys. Rev. 90, 193 (1953)] for predicting the equilibrium domain periodicities in macroscopic slabs of ferroic material

Item Type: Article
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: 212902 (3 pp.)
Identification Number: https://doi.org/10.1063/1.2393145
Depositing User: Sarah Humbert
Date Deposited: 16 Feb 2009 13:03
Last Modified: 23 Jul 2013 10:08
URI: http://eprints.esc.cam.ac.uk/id/eprint/660

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