High field dielectric property and piezoelectric response in PMS-PZT piezoelectric ceramics modified with BiFeO₃

Guifen FanSchool of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, China;Key Lab of Functional Materials for Electronic Information (B), MOE, Huazhong University of Science and Technology, Wuhan, China

Ziqing ZengSchool of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, China;Key Lab of Functional Materials for Electronic Information (B), MOE, Huazhong University of Science and Technology, Wuhan, China

Shanlong JinSchool of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, China;Key Lab of Functional Materials for Electronic Information (B), MOE, Huazhong University of Science and Technology, Wuhan, China

Qiuchen WuSchool of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, China;Key Lab of Functional Materials for Electronic Information (B), MOE, Huazhong University of Science and Technology, Wuhan, China

Wenzhong LvSchool of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, China;Key Lab of Functional Materials for Electronic Information (B), MOE, Huazhong University of Science and Technology, Wuhan, China

Xiaochuan WangSchool of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, China;Key Lab of Functional Materials for Electronic Information (B), MOE, Huazhong University of Science and Technology, Wuhan, ChinaCorrespondence[email protected]

ABSTRACT

The piezoelectric ceramic Pb_0.98Sr_0.02(Mn_1/3Sb_2/3)_0.05Zr_0.48Ti_0.47O₃+0.25 wt%CeO₂ modified with BiFeO₃ was synthesized by conventional ceramics technology and the high field dielectric property was investigated. The XRD patterns show that BiFeO₃ can be commendably dissolved into the PMS-PZT solid solution. Bi³⁺ replacement for A-site Pb²⁺ and Fe³⁺ replacement for B-site Ti⁴⁺ or Zr⁴⁺ cause BiFeO₃ to act as “soft” and “hard” dopant. Therefore, an appropriate amount of BiFeO₃ enhances the piezoelectric properties and high field dielectric properties simultaneously. The ceramic modified with 0.2 mol% BiFeO₃ exhibited the following optimal properties: d₃₃ = 359pC/N, k_p = 0.622, Q_m = 1519, ϵ_r = 1760, tanδ = 0.46% (1 kHz, 1V/mm), and tanδ = 3.26% (1 kHz, 500V/mm).

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Funding

This work is supported by the Fundamental Research Funds for the Central Universities (HUST, No. 2016JCTD114).

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High field dielectric property and piezoelectric response in PMS-PZT piezoelectric ceramics modified with BiFeO₃