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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/64197
Title: 
On the equivalence of the mechanisms governing switching and hysteresis phenomena
Author(s): 
Institution: 
Universidade Estadual Paulista (UNESP)
Abstract: 
The nucleation and growth model, which is usually applied to switching phenomena, is adapted for explaining surface potential measurements on the P(VDF-TrFE) (polyvinylidene fluoride-trifluoroethylene) copolymer obtained in a constant current corona triode. It is shown that the growth is one-dimensional and that the nucleation rate is unimportant, probably because surface potential measurements take much longer than the switching ones. The surface potential data can therefore be accounted for by a growth model in which the velocity of growth varies exponentially with the electric field. Since hysteresis loops can be obtained from surface potential measurements, it is suggested that similar mechanisms can be used when treating switching and hysteresis phenomena, provided that account is taken of the difference in the time scale of the measurements.
Issue Date: 
1-Jan-1992
Citation: 
Proceedings - International Symposium on Electrets, p. 454-459.
Time Duration: 
454-459
Keywords: 
  • Electric Corona - Effects
  • Electric Measurements - Voltage
  • Ferroelectric Materials - Switching
  • Fluorine Containing Polymers - Electric Properties
  • Mathematical Techniques - Integration
  • Corona Triode
  • Polyvinylidene Fluoride (PVDF)
  • Surface Potential
  • Switching Phenomena
  • Copolymers
Source: 
http://dx.doi.org/10.1109/ISE.1991.167255
URI: 
Access Rights: 
Acesso restrito
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/64197
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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