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 |
|---|---|
| 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)