Abstract
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.
Original language | English |
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Pages (from-to) | L1385-L1388 |
Journal | Japanese Journal of Applied Physics, Part 2: Letters |
Volume | 44 |
Issue number | 42-45 |
DOIs | |
Publication status | Published - 2005 Dec 1 |
Keywords
- AFM
- Au electrode
- Ferroelectric thin film
- Surface roughness
- Switching characteristics
- Vinylidene fluoride/trifluoroethylene copolymer
ASJC Scopus subject areas
- Engineering(all)
- Physics and Astronomy (miscellaneous)
- Physics and Astronomy(all)