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High-pressure effect on PbTiO3 : an investigation by Raman and X-Ray scattering up to 63 GPa
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Janolin, P. -E., Bouvier, P., Kreisel, J. (Jens), Thomas, Pam A., Kornev, I. A., Bellaiche, L., Crichton, W., Hanfland, M. and Dkhil, B. (2008) High-pressure effect on PbTiO3 : an investigation by Raman and X-Ray scattering up to 63 GPa. Physical Review Letters, Vol.101 (No.23). Article no. 237601. doi:10.1103/PhysRevLett.101.237601 ISSN 0031-9007.
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Official URL: http://dx.doi.org/10.1103/PhysRevLett.101.237601
Abstract
We report a room-temperature high-pressure x-ray and Raman scattering investigation of lead titanate (PbTiO3) up to 63 GPa. Three continuous phase transitions at 13, 20, and 45 GPa between tetragonal-like phases occur. As a result, no evidence is found for a pressure-induced morphotropic phase boundary. Our study provides experimental evidence that PbTiO3 presents a complex sequence of phases accommodating pressure through mechanisms involving oxygen octahedra tilting and reentrance of ferroelectricity.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics Q Science > QD Chemistry |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
| Library of Congress Subject Headings (LCSH): | Titanates, X-rays -- Scattering, Raman effect, High pressure (Science), Ferroelectricity | ||||
| Journal or Publication Title: | Physical Review Letters | ||||
| Publisher: | American Physical Society | ||||
| ISSN: | 0031-9007 | ||||
| Official Date: | 5 December 2008 | ||||
| Dates: |
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| Volume: | Vol.101 | ||||
| Number: | No.23 | ||||
| Number of Pages: | 4 | ||||
| Page Range: | Article no. 237601 | ||||
| DOI: | 10.1103/PhysRevLett.101.237601 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Funder: | France. Agence nationale de la recherche (ANR), National Science Foundation (U.S.) (NSF), United States. Office of Naval Research (ONR) | ||||
| Grant number: | DMR-0701558 (NSF), N00014-04-1-0413 (ONR), N0014-08-1-0915 (ONR) |
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