Journal article
Piezoelectricity Across a Strain-Induced Isosymmetric Ferri-to-Ferroelectric Transition
Advanced materials interfaces, v 1(5), pp 1400042-n/a
01 Aug 2014
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
We identify a first-order, isosymmetric transition between a ferrielectric (FiE) and ferroelectric (FE) state in A-site ordered LaScO3/BiScO3 and LaInO3/BiInO3 superlattices. Such a previously unreported ferroic transition is driven by the easy switching of cation displacements without changing the overall polarization direction or crystallographic symmetry. Epitaxial strains less than 2% are predicted to be sufficient to traverse the phase boundary, across which we capture a approximate to 5x increase in electric polarization. Unlike conventional Pb-based perovskite ceramics with a morphotropic phase boundary (MPB) that show polarization rotation, we predict an electromechanical response up to 102 pC/N in the vicinity of the FiE-FE phase boundary due to polarization switching without any change in symmetry. We propose this transition as an alternative ferroic transition to obtain a piezoelectric response, with the additional advantage of occurring in benign chemistries without chemical disorder.
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Details
- Title
- Piezoelectricity Across a Strain-Induced Isosymmetric Ferri-to-Ferroelectric Transition
- Creators
- Gaoyang Gou - Xi'an Jiaotong UniversityJames M. Rondinelli - Drexel University
- Publication Details
- Advanced materials interfaces, v 1(5), pp 1400042-n/a
- Publisher
- Wiley
- Number of pages
- 7
- Grant note
- 11204230 / NSFC; National Natural Science Foundation of China (NSFC) Fundamental Research Funds for the Central Universities 2012CB619401 / NBR Program of China W911NF-12-1-0133 / ARO
- Resource Type
- Journal article
- Language
- English
- Web of Science ID
- WOS:000348283700014
- Scopus ID
- 2-s2.0-84920981725
- Other Identifier
- 991019330794004721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Materials Science, Multidisciplinary