TY - JOUR
T1 - Intrinsic switching characteristics of ferroelectric ultrathin vinylidene fluoride/trifluoroethylene copolymer films revealed using Au electrode
AU - Nakajima, Takashi
AU - Abe, Ryosuke
AU - Takahashi, Yoshiyuki
AU - Furukawa, Takeo
PY - 2005
Y1 - 2005
N2 - Time-domain measurements of ferroelectric polarization reversal were conducted for spin-coated ultrathin vinylidene fluoride/trifluoroethylene copolymer films deposited with an Au electrode. It was found that full polarization reversal occurs in 50-330-nm-thick films that have switching time independent of the film thickness. We conclude that the thinning-induced increase in switching time reported previously is not a general feature of this copolymer but is specific to an Al-electrode-deposited sample. The intrinsic switching characteristics revealed here include the broadening of the switching time distribution with thinning, which is attributed to the nonuniform electric field caused by surface roughness.
AB - Time-domain measurements of ferroelectric polarization reversal were conducted for spin-coated ultrathin vinylidene fluoride/trifluoroethylene copolymer films deposited with an Au electrode. It was found that full polarization reversal occurs in 50-330-nm-thick films that have switching time independent of the film thickness. We conclude that the thinning-induced increase in switching time reported previously is not a general feature of this copolymer but is specific to an Al-electrode-deposited sample. The intrinsic switching characteristics revealed here include the broadening of the switching time distribution with thinning, which is attributed to the nonuniform electric field caused by surface roughness.
KW - AFM
KW - Au electrode
KW - Ferroelectric thin film
KW - Surface roughness
KW - Switching characteristics
KW - Vinylidene fluoride/trifluoroethylene copolymer
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U2 - 10.1143/JJAP.44.L1385
DO - 10.1143/JJAP.44.L1385
M3 - Article
AN - SCOPUS:30344478844
VL - 44
SP - L1385-L1388
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 42-45
ER -