Conductive paths through polycrystalline BaTiO3: Scanning probe microscopy study

Conductive paths through polycrystalline BaTiO3: Scanning probe microscopy study

The microstructural features determining the leakage current through polycrystalline BaTiO3 films are investigated using Conductive Atomic Force Microscopy. Grain boundaries are found to be the dominant conductive paths compared to the conduction through the grains. Grain boundary currents are obser...

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Veröffentlicht in:Applied physics letters 2016-08, Vol.109 (7)
Hauptverfasser: Ayvazian, Talin, Bersuker, Gennadi, Lingley, Zachary R., Brodie, Miles J., Foran, Brendan J.
Format: Artikel
Sprache:eng
Schlagworte:
Applied physics
Atomic force microscopy
Barium titanates
Charge transport
Conductivity
Grain boundaries
Leakage current
Microscopes
Microscopy
Polycrystals
Scanning probe microscopy
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Zusammenfassung:The microstructural features determining the leakage current through polycrystalline BaTiO3 films are investigated using Conductive Atomic Force Microscopy. Grain boundaries are found to be the dominant conductive paths compared to the conduction through the grains. Grain boundary currents are observed to reversibly rise with the increase of the applied DC voltages, indicating that the current is controlled by a field-activated charge transport process.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4961443