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Title: Thermally stimulated depolarization current in annealed, quenched and γ-irradiated VDF/TrFE copolymers
Authors: Zhang, X
Peng, Z
Chan, HLW 
Keywords: γ-irradiated VDF/TrFE copolymer
supermolecular structure
thermally stimulated depolarization current
Issue Date: 2001
Publisher: Taylor & Francis Inc.
Source: Ferroelectrics, 2001, v. 264, no. 1, p. 15-20 How to cite?
Journal: Ferroelectrics 
Abstract: Three types of VDF/TrFE copolymer samples were prepared. Thermally stimulated depolarization currents (TSDC) of copolymers have been measured with a modified thermal electric analyzer. For the quenched VDF(70)/TrFE(30) sample, if the poling temperature Tp is below 80 °C, the TSDC spectra only show one peak and the peak shifts monotonously to higher temperatures as Tp increases. Compared with the quenched sample, stronger TSDC signal for the annealed one suggests that the orientation of dipoles and the formation of traps are related to the perfect crystallites. γ-irradiation lowers the Curie point and induces cross-linking of chains in the copolymer. With the increase in irradiation dose the TSDC signal decreases. The irradiated materials lose their ferroelectric properties at doses above 400 kGy.
Description: 3rd Asian Meeting on Ferroelectrics, AMF-3, Hong Kong, 12-15 December 2000
ISSN: 0015-0193
EISSN: 1563-5112
DOI: 10.1080/00150190108008540
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