Interaction Dynamics Between Ferroelectric and Antiferroelectric Domains in a -Based Ceramic
- Iowa State Univ., Ames, IA (United States)
- Pennsylvania State Univ., University Park, PA (United States)
The antiferroelectric-ferroelectric phase transition in PbZrO3-based oxides is of both fundamental and practical importance. In ceramics in which such a transition readily occurs, the antiferroelectric and the ferroelectric phases often coexist in individual grains with a coherent interphase interface. In this work, the electric biasing in situ transmission electron microscopy technique is employed to directly observe a unique microstructural dynamic when ferroelectric and antiferroelectric domains are driven by a moderate electric field to interact. It is found that, under monotonic loading, the ferroelectric domain grows until it is blocked by the ferroelectric-antiferroelectric interface. At the same time, a kink is formed on the interface at the contact point. Here, the interaction of the growing domain with the interface is interpreted in terms of depolarization field-assisted phase transition, which is supported by our phase-field simulation. Upon further bipolar cycling, the ferroelectric domain becomes less mobile and no longer reaches the ferroelectric-antiferroelectric interface, indicative of electric fatigue of the ferroelectric phase.
- Research Organization:
- Pennsylvania State Univ., University Park, PA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; National Science Foundation (NSF)
- Grant/Contract Number:
- FG02-07ER46417; DMR-1700014; DMR-1629270
- OSTI ID:
- 1609867
- Alternate ID(s):
- OSTI ID: 1564565
- Journal Information:
- Physical Review Applied, Vol. 11, Issue 6; ISSN 2331-7019
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
TEM investigation of the domain structure in PbHfO3 and PbZrO3 antiferroelectric perovskites
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journal | January 2020 |
Atomically resolved domain boundary structure in lead zirconate-based antiferroelectrics
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journal | September 2019 |
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