Nanoscale ferroelectric and piezoelectric properties of Sb2S3 nanowire arrays
Loading...
Files
Accepted version
Date
2012-01-23
Authors
Varghese, Justin M.
Barth, Sven
Keeney, Lynette
Whatmore, Roger W.
Holmes, Justin D.
Journal Title
Journal ISSN
Volume Title
Publisher
American Chemical Society (ACS)
Published Version
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.
Description
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
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