Peer-Reviewed Journal Details
Mandatory Fields
Varghese, J.; Barth, S.; Keeney, L.; Whatmore, R. W.; Holmes, J. D.
2012
February
Nanoletters
Nanoscale ferroelectric and piezoelectric properties of Sb2S3 nanowire arrays
Published
()
Optional Fields
12
868
872

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 V1, while the piezo coefficient obtained for 50 nm diameter nanowires was relatively low at around 0.8 pm V1. A spontaneous polarization (Ps) of approximately 1.8 μC cm2 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.

http://pubs.acs.org/journal/nalefd
Grant Details