Campus Units

Materials Science and Engineering

Document Type

Article

Publication Version

Accepted Manuscript

Publication Date

8-2018

Journal or Book Title

Journal of the European Ceramic Society

Volume

38

Issue

10

First Page

3472

Last Page

3477

DOI

10.1016/j.jeurceramsoc.2018.03.049

Abstract

Aging and fatigue are the two main concerns regarding the performance reliability of piezoelectric ceramics. Compared with fatigue, less efforts have been made towards clarifying the micromechanisms of aging. In this report, we employ electric field in-situ transmission electron microscopy (TEM) to directly visualize the domain structure evolution during fatigue and the subsequent aging process in the 0.5Ba(Zr0.2Ti0.8)O3–0.5(Ba0.7Ca0.3)TiO3 (BZT–BCT) polycrystalline ceramic. The macroscopic aging behaviors, including the development of internal bias field (Ebias) and the degradation in switchable polarization (2Pr), are correlated with the microscopic domain wall clamping and domain disruption resulted from the redistribution of oxygen vacancies driven by depolarization field.

Comments

This is a manuscript of an article published as Fan, Zhongming, and Xiaoli Tan. "In-situ TEM study of the aging micromechanisms in a BaTiO3-based lead-free piezoelectric ceramic." Journal of the European Ceramic Society 38, no. 10 (2018): 3472-3477. doi: 10.1016/j.jeurceramsoc.2018.03.049. Posted with permission.

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Copyright Owner

Elsevier Ltd.

Language

en

File Format

application/pdf

Available for download on Monday, March 30, 2020

Published Version

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