Quantitative analysis of the nucleation and growth of ferroelectric domains during the polarization reversal in thin films of vinylidene fluoride and trifluoroethylene copolymer

Autor:	Takeo Furukawa, Naoko Tomoda, Yoshiyuki Takahashi
Rok vydání:	2014
Předmět:	Materials science Polymers and Plastics Condensed matter physics Nucleation Pulse duration Polarization (waves) Ferroelectricity Red Color Condensed Matter::Materials Science Crystallography Piezoresponse force microscopy Materials Chemistry Copolymer Thin film
Zdroj:	Polymer Journal. 47:249-254
ISSN:	1349-0540 0032-3896
DOI:	10.1038/pj.2014.109
Popis:	The distribution of polarization during the polarization reversal in a VDF/TrFE copolymer was studied by the piezoresponse force microscopy, PFM. After an application of a positive voltage pulse to a negatively polarized sample, PFM image was obtained. The regions of blue color corresponding to positively polarized domains were shown to nucleate and grow in negatively polarized regions (red color) as the duration of pulse increased. The change of each domain with the pulse duration was analyzed quantitatively and the nucleation rate and the growth speed of domains were obtained separately.
Databáze:	OpenAIRE
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