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Title: An insight into the origin of low-symmetry bridging phase and enhanced functionality in systems containing competing phases

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4927550· OSTI ID:1225080
 [1];  [1];  [1]; ORCiD logo [2]
  1. Center for High Pressure Science and Technology Advanced Research, Shanghai (China); Carnegie Inst. of Washington, Argonne, IL (United States)
  2. 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
Citation Metrics:
Cited by: 8 works
Citation information provided by
Web of Science

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Cited By (3)

Functional Materials Under Stress: In Situ TEM Observations of Structural Evolution 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