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Ferroelectric properties of flexible PZT composite films
Journal of Physics and Chemistry of Solids ( IF 4 ) Pub Date : 2020-11-01 , DOI: 10.1016/j.jpcs.2020.109371
K. Thanigai Arul , M.S. Ramachandra Rao

Abstract Lead zirconate titanate {[Pb(Zrx, Ti1-x)O3], PZT)} (x = 0.40), synthesized by solid state route, is embedded in the polymer matrix (PMMA) (Poly(methylmethacrylate)) using solvent evaporation technique. Polymer based composite films are prepared by different weight percentage (0.1 wt%, to 2.0 wt%) of the PZT particles. X-ray diffraction (XRD) confirmed that the polymer induced a decrease in the average crystallite size (61 ± 2 nm). Raman spectra of the higher PZT concentration (2.0 wt%) in the matrix revealed the presence of tensile strain in the polymer. The morphology of the PZT particles is found as cubic and the particle size in the range 0.3 μm–4.5 μm. On poling for 1 h, remnant polarization (Pr) (1.33 μC/cm2) of the composite film (2 wt%) is found to exhibit a low leakage current density of 8.12 × 10−10 A/cm2 at 5 kV/cm. The realized properties enable the composites to be employed as potential candidates in sensors, actuators and in energy harvesting applications as well.

中文翻译:

柔性PZT复合薄膜的铁电性能

摘要 通过固态途径合成的锆钛酸铅 {[Pb(Zrx, Ti1-x)O3], PZT)} (x = 0.40) 使用溶剂蒸发嵌入聚合物基质 (PMMA)(聚(甲基丙烯酸甲酯))中技术。聚合物基复合膜由不同重量百分比(0.1wt%,至2.0wt%)的PZT颗粒制备。X 射线衍射 (XRD) 证实聚合物引起平均微晶尺寸 (61 ± 2 nm) 的减小。基质中较高 PZT 浓度 (2.0 wt%) 的拉曼光谱表明聚合物中存在拉伸应变。发现 PZT 颗粒的形态为立方体,粒径在 0.3 μm-4.5 μm 范围内。在极化 1 小时后,发现复合膜 (2 wt%) 的剩余极化 (Pr) (1.33 μC/cm2) 在 5 kV/cm 下表现出 8.12 × 10-10 A/cm2 的低漏电流密度。
更新日期:2020-11-01
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