**New Properties and Applications of Polyvinylidene-Based Ferroelectric Polymer**

J.L. Wang, X.J. Meng and J.H. Chu

Additional information is available at the end of the chapter

http://dx.doi.org/10.5772/60946

### **Abstract**

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150 Ferroelectric Materials – Synthesis and Characterization

Academic Press: 2000.

8678-8686.

There are different kinds of novel properties and applications of polyvinylidene difluoride (PVDF)-basedferroelectricpolymerfilms.Severalissues associatedwiththe structure, properties, and applications of PVDF-based ferroelectric polymer films are discussed. The main achievements of the research include high electric tunability of relaxorferroelectricLangmuir–Blodgett(LB)terpolymerfilms,the creepprocess ofthe domain switching in poly(vinylidene fluoride-trifluoroethylene) ferroelectric thin films, transition from relaxor to ferroelectric-like phase in poly(vinylidene fluoridetrifluoroethylene -chlorofluoroethylene) terpolymer ultrathin films, abnormal polarization switching of relaxor terpolymer films at low temperatures, huge electrocaloric effectin LB ferroelectric polymerthin films, self-polarization in ultrathin LB polymerfilms, enhanced dielectric and ferroelectric properties in artificial polymer multilayers, and transition of polarization switching from extrinsic to intrinsic in ultrathin PVDF homopolymer films.

In addition, the recent progresses of PVDF-based ferroelectric polymer films are connected with potential applications.

**Keywords:** Poly(vinylidene fluoride), Langmuir–Blodgett technique, Ferroelectric polymer, Ferroelectric relaxor
