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Revised structural phase diagram of (Ba0.7Ca0.3TiO3)-(BaZr0.2Ti0.8O3)
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Keeble, Dean Samuel, Benabdallah, Feres, Thomas, Pam A., Maglione, Mario and Kreisel, J. (Jens) (2013) Revised structural phase diagram of (Ba0.7Ca0.3TiO3)-(BaZr0.2Ti0.8O3). Applied Physics Letters, Volume 102 (Number 9). Article no. 092903. doi:10.1063/1.4793400 ISSN 0003-6951.
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WRAP_Keeble_BCTZ Paper_v12-fieldsremoved-actual.pdf - Accepted Version Download (1438Kb) | Preview |
Official URL: http://dx.doi.org/10.1063/1.4793400
Abstract
The temperature-composition phase diagram of barium calcium titanate zirconate (x(Ba0.7Ca0.3TiO3)(1-x)(BaZr0.2Ti0.8O3); BCTZ) has been reinvestigated using high-resolution synchrotron x-ray powder diffraction. Contrary to previous reports of an unusual rhombohedral-tetragonal phase transition in this system, we have observed an intermediate orthorhombic phase, isostructural to that present in the parent phase, BaTiO3, and we identify the previously assigned T-R transition as a T-O transition. We also observe the O-R transition coalescing with the previously observed triple point, forming a phase convergence region. The implication of the orthorhombic phase in reconciling the exceptional piezoelectric properties with the surrounding phase diagram is discussed.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Library of Congress Subject Headings (LCSH): | Piezoelectricity | ||||
Journal or Publication Title: | Applied Physics Letters | ||||
Publisher: | American Institute of Physics | ||||
ISSN: | 0003-6951 | ||||
Official Date: | 2013 | ||||
Dates: |
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Volume: | Volume 102 | ||||
Number: | Number 9 | ||||
Page Range: | Article no. 092903 | ||||
DOI: | 10.1063/1.4793400 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Date of first compliant deposit: | 24 December 2015 | ||||
Date of first compliant Open Access: | 24 December 2015 | ||||
Funder: | Institute of Advanced Studies (IAS), Coopérations et mobilités internationales Rhône-Alps (CMIRA), Advantage West Midlands (AWM), Higher Education Funding Council for England (HEFCE) |
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