ENHANCED FERROELECTRIC PROPERTY OF P(VDF-HFP)/ZnFe2O4 NANOCOMPOSITE FILMS

Author (s) : P.Tamilselvi, K.Bhuvaneswari, M.Anandan, N.Janani

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Abstract :
Flexible, self-standing films of poly(vinylidenefluoride-hexafluoropropylene) P(VDF-HFP) and ZnFe2O4 nanocomposite of different weight percentages (0, 5, 10, 15, 20 %)were fabricated through spin coating technique. The structural, compositional, ferroelectric and dielectric behaviors were investigated. XRD and FTIR studies confirmed the presence of both electro- active β phase and nonelection active α phase in P(VDF-HFP). The enhancement of ferroelectric and dielectric properties with the addition of ZnFe2O4 was confirmed with the help of the ferroelectric hysteresis loops and also the dynamic contact electrostatic force microscopy (DC-EFM) studies. P(VDF-HFP) – ZnFe2O4 film of 20 wt% was observed to have better enhancement than other films. The films exhibited enhanced ferroelectricity, high dielectric constant, low dielectric loss and low leakage current which make them the potential candidates in the storage device applications.

Keywords : P(VDF-HFP), ferroelectric, DC-EFM, Dielectric

Conference Date : 17/09/2021

Pages : 277

Paper ID : IESMDT275