Lead zirconate titanate ferroelectric thin film capacitors: Effects of surface treatments on ferroelectric properties

作者: Ye Chen , Paul C. McIntyre

DOI: 10.1063/1.2769394

关键词: OxideCoercivityLayer (electronics)Materials scienceComposite materialX-ray photoelectron spectroscopyInorganic chemistryFerroelectricityLead zirconate titanateChemical vapor depositionSurface layer

摘要: X-ray photoelectron spectroscopy (XPS) revealed a lead-rich carbonatelike surface layer on polycrystalline lead zirconate titanate films grown by metal-organic chemical vapor deposition. In situ XPS studies indicated that originally present in the oxide film reacted with Pt during its deposition, forming Ti∕Zr-rich defective interfacial layer. Lead underwent nitric acid treatment, which effectively removed layer, exhibited stretched out of hysteresis loop vicinity coercive field, consistent presence nonferroelectric passive Reasonable agreement between XPS-measured interface thickness and determined electrical characterization was obtained.

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