An insight into the origin of low-symmetry bridging phase and enhanced functionality in systems containing competing phases
- Center for High Pressure Science and Technology Advanced Research, Shanghai (China); Carnegie Inst. of Washington, Argonne, IL (United States)
- Harbin Inst. of Technology, Harbin (China); Pennsylvania State Univ., University Park, PA (United States)
High piezoelectric activity of ferroelectrics with morphotropic phase boundary (MPB) compositions has been the focus of numerous recent investigations. The concept of a bridging low-symmetry phase between competing phase structures of the MPB composition remains controversial due to the compositional inhomogeneity near the MPB and the lack of appropriate experimental techniques to delineate the complex crystal structures. We have studied a simple ferroelectric BaTiO3 by employing a high resolution synchrotron-based technique, in which the formation of different symmetry regions due to chemical inhomogeneity can be ruled out. As a result, we observed two types of thermotropic phase boundaries, revealing the importance of interphase-strain in the formation of a bridging phase between competing phases and the enhancement of functionality.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Key Basic Research Program of China; National Institutes of Health (NIH)
- Grant/Contract Number:
- 2013CB632900; P41-EB2182; AC02-06CH11357
- OSTI ID:
- 1225080
- Alternate ID(s):
- OSTI ID: 1420565
- Journal Information:
- Applied Physics Letters, Vol. 107, Issue 4; ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- ENGLISH
Web of Science
Functional Materials Under Stress: In Situ TEM Observations of Structural Evolution
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journal | November 2019 |
An intermediate metastable ferroelectric state induced giant functional responses in Bi 0.5 Na 0.5 TiO 3 ceramics
|
journal | January 2019 |
Elastic Properties and Enhanced Piezoelectric Response at Morphotropic Phase Boundaries
|
journal | December 2015 |
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