Simultaneous enhancement of d33 and depolarization temperature of the morphotropic phase boundary composition of the Pb-free piezoceramic Na1/2Bi1/2TiO3–BaTiO3

IF 5.8 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society Pub Date : 2025-02-09 DOI:10.1016/j.jeurceramsoc.2025.117271

Getaw Abebe Tina, Rajeev Ranjan

引用次数: 0

Abstract

We investigate the influence of oxygen deficient modifier BaAlO_2.5 (BAO) on the structure, dielectric, and piezoelectric properties of the morphotropic phase boundary (MPB) composition Na_1/2Bi_1/2TiO₃-6.5BaTiO₃ (NBT-6.5BT) of the lead-free NBT-BT piezoceramic solid solution. We found that merely 1 mol percent of BAO increases the weak signal longitudinal piezoelectric coefficient (d₃₃) from 164 pC/N to 205 pC/N. This is accompanied by a remarkable increase in the depolarization temperature (T_d) from 85 °C to 160 °C respectively. We discuss the mechanism underlying the simultaneous increase in the d₃₃ and T_d in this system.

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来源期刊

Journal of The European Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

10.70

自引率

12.30%

发文量

863

审稿时长

35 days

期刊介绍： The Journal of the European Ceramic Society publishes the results of original research and reviews relating to ceramic materials. Papers of either an experimental or theoretical character will be welcomed on a fully international basis. The emphasis is on novel generic science concerning the relationships between processing, microstructure and properties of polycrystalline ceramics consolidated at high temperature. Papers may relate to any of the conventional categories of ceramic: structural, functional, traditional or composite. The central objective is to sustain a high standard of research quality by means of appropriate reviewing procedures.