Hooper, TE and Bell, AJ orcid.org/0000-0002-2061-3862 (2020) Landau–Devonshire derived phase diagram of the BiFeO3–PbTiO3 solid solution. Journal of Applied Physics, 127 (10). 104102. ISSN 0021-8979
Abstract
Since the construction of the first structural phase diagram of the BiFeO3–PbTiO3 solid solution, there has been ambiguity as to the true location of the morphotropic phase boundary (MPB). In this study, a Landau–Devonshire derived phase diagram has been constructed in order to provide a mathematically derived perspective. The compositional dependence on properties has been modeled as a linear dependence between the Landau coefficients of each end member. It is found that the only structural phases found below TC are rhombohedral and tetragonal, which at 25 °C shows an MPB at 0.696BiFeO3–0.304PbTiO3. The MPB also shows temperature dependence similar to other ferroelectric solid solutions in which the tetragonal–rhombohedral phase transition moves toward higher BiFeO3 contents at higher temperatures. Although the replication of the experimentally observed phase diagram can be constructed, this method is found to be insufficient for describing the spontaneous strain behavior.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 Author(s). This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Hooper, TE and Bell, AJ (2020) Landau–Devonshire derived phase diagram of the BiFeO3–PbTiO3 solid solution. Journal of Applied Physics, 127 (10). 104102. ISSN 0021-8979 and may be found at (https://doi.org/10.1063/1.5144151). Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) |
Funding Information: | Funder Grant number EPSRC (Engineering and Physical Sciences Research Council) EP/M002462/1 EPSRC (Engineering and Physical Sciences Research Council) EP/R010293/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 13 Mar 2020 16:29 |
Last Modified: | 25 Jun 2023 22:11 |
Status: | Published |
Publisher: | AIP Publishing |
Identification Number: | 10.1063/1.5144151 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:158365 |