TY - GEN
T1 - Accelerated polarization reversal in a copolymer of vinylidene fluoride and trifluoroethylene
AU - Arayashiki, Y.
AU - Nakajima, T.
AU - Takahashi, Y.
AU - Furukawa, T.
PY - 2005/12/1
Y1 - 2005/12/1
N2 - The ferroelectric switching time of a copolymer of vinylidene fluoride and trifluoroethylene depends on not only the applied electric field strength but also the history of the previous polarization process. Measurements using a bipolar on-off pulse field have shown that polarization reversal is accelerated as the pulse width is decreased. The rate of acceleration becomes more significant as the applied field strength is reduced. For a given pulse width, the switching time depends on the applied field according to an exponential law in that the activation field decreases with decreasing pulse width whereas the high-field-limit switching time remains constant. These results can be interpreted in terms of the nucleation probability that increases with decreasing on and/or off pulse width.
AB - The ferroelectric switching time of a copolymer of vinylidene fluoride and trifluoroethylene depends on not only the applied electric field strength but also the history of the previous polarization process. Measurements using a bipolar on-off pulse field have shown that polarization reversal is accelerated as the pulse width is decreased. The rate of acceleration becomes more significant as the applied field strength is reduced. For a given pulse width, the switching time depends on the applied field according to an exponential law in that the activation field decreases with decreasing pulse width whereas the high-field-limit switching time remains constant. These results can be interpreted in terms of the nucleation probability that increases with decreasing on and/or off pulse width.
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M3 - Conference contribution
AN - SCOPUS:33847759840
SN - 0780391160
SN - 9780780391161
T3 - Proceedings - International Symposium on Electrets
SP - 159
EP - 160
BT - 2005 12th International Symposium on Electrets, ISE 12 - Proceedings
T2 - 2005 12th International Symposium on Electrets, ISE 12
Y2 - 11 September 2005 through 14 September 2005
ER -