Affiliation:
1. College of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, China
2. College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350117, China
Abstract
In this work, to systematically investigate the evolution characteristics of electrical properties in polymorphic piezoceramics, the Ba(Ti0.92Zr0.08)O3 ceramics are selected as a paradigm that possesses all the general phase structures above room temperature. It is found that the evolution of electrical properties with temperature change can be divided into three stages based on phase structure transforming: high ferroelectric and stable strain properties at R and R-O, high ferroelectric and enhanced strain/converse piezoelectric properties at O, O-T, and T phase, and the rapidly decreased ferroelectric and strain properties in T-C and C phase. However, the ferroelectric and strain properties all increase with rising electric field and their evolution can be divided into two parts based on phase structures. The high property and slow increase rate are present at R, R-O, O, and O-T, while the poor property but a high increase rate is present around T-C. Similar results can be found in the evolution of electrostrictive property. Finally, the highest d33* of ~1240 pm/V and Q33 of ~0.053 m4/C2 are obtained at O-T due to the high ferroelectricity but easy domain switching. This work affords important guidance for the property optimization of polymorphic piezoceramics.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Fujian Province
Qishan Scholar Financial Support from Fuzhou University
Subject
Inorganic Chemistry,Condensed Matter Physics,General Materials Science,General Chemical Engineering
Reference32 articles.
1. Piezoelectric actuators and motors: Materials, designs, and applications;Gao;Adv. Mater. Technol.,2020
2. Strain and illumination triggered regulations of up-conversion luminescence in Er-doped Bi0.5Na0.5TiO3-BaTiO3/Mica flexible multifunctional thin films;Zhou;J. Mater.,2022
3. Wu, J. (2018). Advances in Lead-Free Piezoelectric Materials, Springer Nature Singapore Pte Ltd.
4. Evolution from Lead-Based to Lead-Free Piezoelectrics: Engineering of Lattices, Domains, Boundaries, and Defects Leading to Giant Response;Waqar;Adv. Mater.,2022
5. A Comprehensive Review on the State-of-the-Art of Piezoelectric Energy Harvesting;Sezer;Nano Energy,2020