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Article
Effects of electron irradiation on the ferroelectric properties of Langmuir-Blodgett copolymer films
Journal of Applied Physics (2005)
  • Christina M Othon, Wesleyan University
  • Fred B Bateman
  • Stephen Ducharme, University of Nebraska-Lincoln
Abstract

The effect of irradiation on the ferroelectric properties of Langmuir-Blodgett films of the copolymer poly(vinylidene fluoride-trifluoroethylene) was investigated using 1‐MeV electrons for doses from 0.16 to 1.10 MGy, where 1 Gray (Gy) = 100 rad. Irradiation causes a systematic decrease in the phase-transition temperature, crystallinity, and spontaneous polarization of the films. The crystallinity and spontaneous polarization of the films decreased by amounts proportional to the dose, both tending toward zero near a dose of 1.30 MGy. The ferroelectric-paraelectric phase-transition temperature, however, was only reduced by about 12%, indicating that the primary effect of irradiation was to convert a crystalline ferroelectric material to a noncrystalline dielectric.

Keywords
  • Ferroelectric
Publication Date
2005
Citation Information
Christina M Othon, Fred B Bateman and Stephen Ducharme. "Effects of electron irradiation on the ferroelectric properties of Langmuir-Blodgett copolymer films" Journal of Applied Physics Vol. 98 (2005)
Available at: http://works.bepress.com/christina_othon/9/