Enhanced durability of designated polarization of PbTiO3 nanodot arrays investigated by piezoresponse force microscopy

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We used piezoresponse force microscopy (PFM) to investigate local domain relaxation behavior of overhanging PbTiO3 (PTO) nanodot arrays on platinized silicon substrates, which were prepared by using PbO vapor phase reaction sputtering on micellar monolayer films of polystyrene-block-poly(ethylene oxide) (PS-b-PEO) loaded with TiO2 sol-gel precursor. The overhanging PTO nanodot arrays (92% at a temperature of 100 degrees C for 365 min) showed better ferroelectric retention than the PTO thin films (80% at the same condition). The enhanced polarization states and the absence of depolarization field due to homogeneous electric field inside the overhanging nanodot allowed for the remarkable durability of designated ferroelectric polarization.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2015-04
Language
English
Article Type
Article
Keywords

FERROELECTRIC THIN-FILMS; RETENTION

Citation

APPLIED SURFACE SCIENCE, v.334, pp.165 - 168

ISSN
0169-4332
DOI
10.1016/j.apsusc.2014.08.171
URI
http://hdl.handle.net/10203/198318
Appears in Collection
MS-Journal Papers(저널논문)
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