Polarization induced resistance switching effect in ferroelectric vinylidene-fluoride/trifluoroethylene copolymer ultrathin films

Polarization induced resistance switching effect in ferroelectric vinylidene-fluoride/trifluoroethylene copolymer ultrathin films

We observed a clear polarization reversal-induced resistance switching effect in ferroelectric Vinylidene-fluoride (VDF)/Trifluoroethylene (TrFE) copolymer thin films. Pt and Au were used as the bottom and top electrodes, respectively, and the thickness of the VDF/TrFE copolymer film was adjusted to...

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Veröffentlicht in:Applied physics letters 2014-10, Vol.105 (16)
Hauptverfasser: Usui, S., Nakajima, T., Hashizume, Y., Okamura, S.
Format: Artikel
Sprache:eng
Schlagworte:
Applied physics
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
COPOLYMERS
CURRENTS
Electrode polarization
ELECTRODES
FERROELECTRIC MATERIALS
Ferroelectricity
FLUORIDES
Gold
Platinum
POLARIZATION
Switching
THICKNESS
THIN FILMS
Vinylidene
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Zusammenfassung:We observed a clear polarization reversal-induced resistance switching effect in ferroelectric Vinylidene-fluoride (VDF)/Trifluoroethylene (TrFE) copolymer thin films. Pt and Au were used as the bottom and top electrodes, respectively, and the thickness of the VDF/TrFE copolymer film was adjusted to be 10 nm. The conduction current was 100 times higher in the case of the spontaneous polarization of the VDF/TrFE film towards the Au electrode than that in the case of the opposite direction. This resistance switching was confirmed to be reproducible after 10 successive polarization reversals.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4900490