Unipolar poling-induced high switching speed and improved imprint behaviors for poly(vinylidene fluoride-trifluoroethylene) copolymer ultrathin films
2013; American Institute of Physics; Volume: 103; Issue: 26 Linguagem: Inglês
10.1063/1.4858035
ISSN1520-8842
AutoresYing Hou, Zhaoyue Lü, Tiansong Pu, Yuan Zhang, Xiangjian Meng, Haisheng Xu,
Tópico(s)Ferroelectric and Piezoelectric Materials
ResumoThe polarization switching and imprint behaviors with different pulse and unipolar poling processes for ferroelectric poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) copolymer ultrathin films have been studied. Compared with results for samples only through the certain protocol we studied previously, the much faster switching speed and lower voltage shift are observed for films with certain protocol as well as certain unipolar poling. The analyses show that these properties are strongly dependent on the directions of the switching and unipolar poling field. The results provide another effective route to design the optimum protocol for ferroelectric random access memory based on P(VDF-TrFE) copolymer ultrathin film.
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