Structural and dielectric properties of ferroelectric poly(vinylidene fluoride-trifluoroethylene) thin films with different bottom electrodes

  • P. F. Liu
  • , P. Gemeiner
  • , H. Shen
  • , X. J. Meng
  • , J. H. Chu
  • , S. Geiger
  • , N. Guiblin
  • , B. Dkhil

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

In this work we studied 90 nm thick copolymer thin films of vinylidene fluoride (70%) with trifluoroethylene (30%) grown by Langmuir-Blodgett onto silicon substrates. The effects of two different bottom electrodes, namely, Al and LaNiO3 (LNO) are investigated. A Debye-like relaxation near 320 K is enlarged by LNO bottom electrode. X-ray diffraction pattern attests that two different crystallographic structures coexist below 340 K in film deposited on LNO. Compared with Al electrode, LNO electrode strongly increases defects or gauche segments in film and further weakens properties of film.

Original languageEnglish
Article number054111
JournalJournal of Applied Physics
Volume106
Issue number5
DOIs
StatePublished - 2009
Externally publishedYes

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