Title
In-situ TEM study of the aging micromechanisms in a BaTiO3-based lead-free piezoelectric ceramic
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.
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Copyright Owner
Elsevier Ltd.
Copyright Date
2018
Language
en
File Format
application/pdf
Recommended Citation
Fan, Zhongming and Tan, Xiaoli, "In-situ TEM study of the aging micromechanisms in a BaTiO3-based lead-free piezoelectric ceramic" (2018). Materials Science and Engineering Publications. 322.
https://lib.dr.iastate.edu/mse_pubs/322
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.