Reversible phase transition and structure memory effect of metastable phase in electron-irradiated poly(vinylidene-fluoride-trifluoroethyline) copolymers

Autor: Shishang Guo, R. H. Wang, Yuguo Tang, X. Z. Zhao, Wei Li, G. Yang, Dunhui Wang
Rok vydání: 2003
Předmět:
Zdroj: Applied Physics Letters. 82:2136-2138
ISSN: 1077-3118
0003-6951
Popis: We report the results of x-ray diffraction studies on phase transition behavior of irradiated poly(vinylidene-fluoride-trifluoroethylene) [P(VDF-TrFE)] copolymer. It is found that the transformations between the polar ferroelectric phase, the metastable paraelectric phase, and normal paraelectric phase induced by thermal and electric field are reversible. The reversible phase transition of the metastable paraelectric phase is very important to explain the appearance of giant strain in the irradiated P(VDF-TrFE) copolymer. The macroscopic strain caused by these reversible transitions was estimated.
Databáze: OpenAIRE