Large piezoelectric properties of (1 − x)Na0.5Bi0.5TiO3–xBaTiO3 thin films prepared by sol–gel method

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• 作者：Wenhan Cui ; Xiaohui Wang ; Longtu Li
• 刊名：Journal of Materials Science: Materials in Electronics
• 出版年：2016
• 出版时间：July 2016
• 年：2016
• 卷：27
• 期：7
• 页码：7287-7291
• 全文大小：1,435 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Optical and Electronic Materials
  Characterization and Evaluation Materials
  
• 出版者：Springer New York
• ISSN：1573-482X
• 卷排序：27

文摘

(1 − x)Na_0.5Bi_0.5TiO₃–xBaTiO₃ (BNT–xBT) thin films with x = 0, 0.04, 0.06, 0.08 were prepared on Pt(111)/Ti/SiO₂/Si substrates via water-based sol–gel method. A new crystallization process called stepwise crystallization was used to obtain pure perovskite phase observed by XRD. Piezoelectric property and ferroelectric property of BNT–xBT thin films are investigated, and BNT–BT0.06 shows best piezoelectric and ferroelectric properties among the different compositions. The maximum strain value of 1.4–1.8 % and d₃₃ of 83 pm/V are observed for BNT–BT0.06 thin films. AFM and PFM images reveal the dense morphology and large piezoresponse of BNT–BT thin films without orientation.