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Effect of fast electron irradiation on the dielectric and pyroelectric response of radially-oriented PVDF film

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4 Author(s)
Hilczer, B. ; Inst. of Molecular Phys., Polish Acad. of Sci., Poznan ; Smogor, H. ; Kulek, J. ; Goslar, J.

The radiation-induced functionalization of ferroelectric P(VDF/TrFE) copolymers has been found to be effective in the production of polymer relaxors attractive for applications. We studied radiation-induced changes in the dielectric relaxation and pyroelectric response of radially oriented PVDF film irradiated with 1 MeV and 1.5 MeV electrons. Radiation damage to the samples was characterized by ESR and IR spectroscopy. The radiation-induced downward shift of the Curie temperature and the freezing temperature of segmental motions as well as the increase in the dielectric dispersion were related to the damage in all-trans conformation of the polymer chain and formation of polar regions

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Dielectrics and Electrical Insulation, IEEE Transactions on  (Volume:13 ,  Issue: 5 )