Article ID Journal Published Year Pages File Type
5437634 Ceramics International 2017 40 Pages PDF
Abstract
In this paper, we investigated the impact of Sr-doping on the structural properties and electrical characteristics of lead zirconate titanate [Pb(Zr0.52Ti0.48)O3, PZT] thin films deposited on RuO2 electrodes by a sol-gel process and spin-coating technique. We used X-ray diffraction, atomic force microscopy, X-ray photoelectron spectroscopy, and field-emission transmission electron microscopy to explore the structural, morphological, chemical, and microstructural features, respectively, of these films as a function of the growth condition (strontium doping concentrations varied from 1, 3, and 5 mol%). The PZT thin film processed at the 3 mol% Sr exhibited the best electrical characteristics, including a low leakage current of 2.27×10−7 A/cm2 at an electric field of 50 kV/cm, a large capacitance value of 2.74 μF/cm2 at a frequency of 10 kHz, and a high remanent polarization of 37.95 μC/cm2 at a frequency of 5 kHz. We attribute this behavior to the optimal amount of strontium in the PZT film forming a perovskite structure and a thicker interfacial layer at the PSZT film-RuO2 electrode interface.
Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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