Nanoscale ferroelectric and piezoelectric properties of Sb2S3 nanowire arrays

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Date
2012-01-23
Authors
Varghese, Justin M.
Barth, Sven
Keeney, Lynette
Whatmore, Roger W.
Holmes, Justin D.
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Publisher
American Chemical Society (ACS)
Published Version
10.1021/nl2039106
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Abstract
We report the first observation of piezoelectricity and ferroelectricity in individual Sb2S3 nanowires embedded in anodic alumina templates. Switching spectroscopy-piezoresponse force microscopy (SS-PFM) measurements demonstrate that individual, c-axis-oriented Sb2S3 nanowires exhibit ferroelectric as well as piezoelectric switching behavior. Sb2S3 nanowires with nominal diameters of 200 and 100 nm showed d33(eff) values around 2 pm V–1, while the piezo coefficient obtained for 50 nm diameter nanowires was relatively low at around 0.8 pm V–1. A spontaneous polarization (Ps) of approximately 1.8 μC cm–2 was observed in the 200 and 100 nm Sb2S3 nanowires, which is a 100% enhancement when compared to bulk Sb2S3 and is probably due to the defect-free, single-crystalline nature of the nanowires synthesized. The 180° ferroelectric monodomains observed in Sb2S3 nanowires were due to uniform polarization alignment along the polar c-axis.
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Keywords
Ferroelectric , Nanowires , PFM , Piezoelectric , Sb2S3 , Template , Nanowires , Crystallography , Ferroelectricity , Piezoelectricity , Polarization
Citation
Varghese, J., Barth, S., Keeney, L., Whatmore, R. W. and Holmes, J. D. (2012) 'Nanoscale Ferroelectric and Piezoelectric Properties of Sb2S3 Nanowire Arrays', Nano Letters, 12(2), pp. 868-872. doi: 10.1021/nl2039106
Link to publisher’s version
https://pubs.acs.org/doi/abs/10.1021/nl2039106
URI
https://hdl.handle.net/10468/6762
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Chemistry - Journal Articles
Tyndall National Institute - Journal Articles
Copyright
© 2012 American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in Nano Letters copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/abs/10.1021/nl2039106