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      Multi-phase structure and electrical properties of Bi 0.5Li 0.5ZrO 3 doping K 0.48Na 0.56NbO 3 lead-free piezoelectric ceramics

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          Abstract

          (1 –x)K 0.48Na 0.56NbO 3xBi 0.5Li 0.5ZrO 3 (KNN– xBLZ, x = 0–0.06) lead-free piezoelectric ceramics were prepared by the conventional solid-state sintering method, and their phase structures and electric properties as well as T C were systematically investigated. The orthorhombic–tetragonal (O–T) two phases were detected in all (1 –x)K 0.48Na 0.56NbO 3xBi 0.5Li 0.5ZrO 3 ceramics at 0.01 ≤ x ≤ 0.05. Due to the appropriate ratio between O phase and T phase ( C O / C T = 45/55), high piezoelectric properties of d 33 = 239 pC/N, k p = 34%, and P r = 25.23 μC/cm 2 were obtained at x = 0.04. Moreover, a high T C = 348 ℃ was also achieved in KNN– xBLZ ceramic at x = 0.04. These results indicate that (1 –x)K 0.48Na 0.56NbO 3xBi 0.5Li 0.5ZrO 3 system is a promising candidate for high-temperature piezoelectric devices.

          Author and article information

          Journal
          Journal of Advanced Ceramics
          Journal of Advanced Ceramics
          Tsinghua University Press (Tsinghua University, Beijing 100084, China )
          2226-4108
          05 March 2018
          : 07
          : 01
          : 79-87
          Affiliations
          [ a ] School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
          [ b ] New Metallurgy Hi-Tech Group Co., Ltd., China Iron & Steel Research Institute Group, Beijing 100081, China
          [ c ] Hebei Key Lab of Optic-Electronic Information and Materials, College of Physics Science & Technology, Hebei University, Baoding 071002, China
          Author notes
          * Corresponding author. E-mail: bpzhang@ 123456ustb.edu.cn
          Article
          2226-4108-07-01-79
          10.1007/s40145-018-0259-3
          a67b3bbf-34cf-4024-ad1f-bab111b87a2c
          Copyright @ 2018

          © The Author(s) 2018. This article is published with open access at Springerlink.com

          Open Access The articles published in this journal are distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/ by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

          History
          : 07 November 2017
          : 13 January 2018
          : 14 January 2018
          Categories
          Research Article

          Materials technology,Materials properties,Materials characterization,Composites,Ceramics
          solid-state sintering,lead-free piezoelectric ceramics,electrical properties,potassium–sodium niobate (KNN),multi-phase

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