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

Abstract

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.

Authors:
 [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)
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Key Basic Research Program of China; National Institutes of Health (NIH)
OSTI Identifier:
1225080
Alternate Identifier(s):
OSTI ID: 1420565
Grant/Contract Number:  
2013CB632900; P41-EB2182; AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 107; Journal Issue: 4; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
ENGLISH
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Synchrotrons; Crystal structure; Perovskites; Raman spectroscopy; X-ray diffraction; Ferroelectric materials; Interphases; Piezoelectricity; Phase transitions; Bragg reflection

Citation Formats

Kong, Lingping, Liu, Gang, Yang, Wenge, and Cao, Wenwu. An insight into the origin of low-symmetry bridging phase and enhanced functionality in systems containing competing phases. United States: N. p., 2015. Web. doi:10.1063/1.4927550.
Kong, Lingping, Liu, Gang, Yang, Wenge, & Cao, Wenwu. An insight into the origin of low-symmetry bridging phase and enhanced functionality in systems containing competing phases. United States. https://doi.org/10.1063/1.4927550
Kong, Lingping, Liu, Gang, Yang, Wenge, and Cao, Wenwu. 2015. "An insight into the origin of low-symmetry bridging phase and enhanced functionality in systems containing competing phases". United States. https://doi.org/10.1063/1.4927550. https://www.osti.gov/servlets/purl/1225080.
@article{osti_1225080,
title = {An insight into the origin of low-symmetry bridging phase and enhanced functionality in systems containing competing phases},
author = {Kong, Lingping and Liu, Gang and Yang, Wenge and Cao, Wenwu},
abstractNote = {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.},
doi = {10.1063/1.4927550},
url = {https://www.osti.gov/biblio/1225080}, journal = {Applied Physics Letters},
issn = {0003-6951},
number = 4,
volume = 107,
place = {United States},
year = {Mon Jul 27 00:00:00 EDT 2015},
month = {Mon Jul 27 00:00:00 EDT 2015}
}

Journal Article:
Free Publicly Available Full Text
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Cited by: 8 works
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Works referencing / citing this record:

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