Articles
  • Temperature-dependent ferroelectric and piezoelectric response of Yb3+ and Tm3+ co-doped Ba0.95Ca0.05Ti0.90Zr0.10O3 lead-free ceramic

  • Yongshang Tiana,*, Shuiyun Lia, Bingqian Zhanga, Yansheng Gongb, Peng Liua, Xiongjie Huc and Qiangshan Jinga,*

  • aCollege of Chemistry and Chemical Engineering, Henan Key Laboratory of Utilization of Non-Metallic Mineral in the South of Henan, Xinyang Normal University, Xinyang 464000, China
    bFaculty of Material Science and Chemistry, China University of Geosciences, Wuhan 430074, China
    cLoyalty Enterprise Development (Xinyang) Co., LTd., Xinyang 464017, China

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The electrical properties of piezoelectric ceramics are temperature-dependent, which affects their potential for applications in environments with temperature variation. In this work, Yb3+ and Tm3+ co-doped Ba0.95Ca0.05Ti0.90Zr0.10O3 (BCTZ-YT) dense lead-free ceramic was prepared using a modified polymeric precursor route. On the basis of structural and electrical measurements at various temperatures, the mechanism of a lack of oxygen vacancies, small structural defects, and small defect dipoles was deduced. This study reveals that the ferroelectricity and piezoelectricity are temperature-dependent, whereas the capacitance is essentially unchanged with increasing temperature owing to the presence of a pure orthorhombic phase. The capacitance of the BCTZ-YT ceramic was essentially constant at ~4.5 nF, the thermal expansion coefficient was 8.57 × 10−6 K−1 below 75 oC, and the piezoelectric response (d33*) was above 416 pm/V in a wide temperature range (-20 to 40 oC), suggesting the results of this study are expected to inform future research


Keywords: Yb3+ and Tm3+ co-doping, BCTZ-YT ceramics, Defects, Temperature-dependent piezoelectricity, Capacitance

This Article

  • 2022; 23(4): 430-435

    Published on Aug 31, 2022

  • 10.36410/jcpr.2022.23.4.430
  • Received on Dec 13, 2021
  • Revised on Mar 13, 2022
  • Accepted on Mar 22, 2022

Correspondence to

  • Yongshang Tian a and Qiangshan Jing a

  • College of Chemistry and Chemical Engineering, Henan Key Laboratory of Utilization of Non-Metallic Mineral in the South of Henan, Xinyang Normal University, Xinyang 464000, China
    Tel : +86 0376 6390702 Fax: +86 0376 6390702

  • E-mail: tianyongshang423@163.com; tianyongshang@xynu.edu.c