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Local structure and the phase transitions of BaTiO3
Abstract
We have measured and analyzed the Extended X-ray Absorption Fine Structure (EXAFS) of BaTiO3 at the barium k edge and the X-ray Absorption Near Edge Structure (XANES) at the titanium K edge. Our structural data show that the sequence of phase transitions in this material as the temperature increases is explained by a disordering of domains wherein the local structural environment remains approximately rhombohedrally distorted at all temperatures around both metal sites. As the temperature is raised, the long range correlations between these local distortions change, resulting in the observed sequence of phase transitions. Our measurements confirm the model of eight-site disorder used to explain the phase diagram of BaTiO3. We show that EXAFS and XANES are sensitive probes of both the magnitude and direction of the local structural distortions which accompany ferroelectricity and therefore are sensitive probes of the microscopic mechanism of ferroelectricity.
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Cites
Structures of the ferroelectric phases of barium titanate
Kwei, G. H., Lawson, A. C., Billinge, S. J. L., & Cheong, S. W. (1993) · The Journal of Physical Chemistry · doi:10.1021/j100112a043 · Cited by 777
Cited by
Analysis of Soils and Minerals Using X‐ray Absorption Spectroscopy
Kelly, S. D., Hesterberg, D., & Ravel, B. (2008) · SSSA Book Series · doi:10.2136/sssabookser5.5.c14 · Cited by 400
Self-citationRevised structural phase diagram of (Ba0.7Ca0.3TiO3)-(BaZr0.2Ti0.8O3)
Keeble, D. S., Benabdallah, F., Thomas, P. A., Maglione, M., & Kreisel, J. (2013) · Applied Physics Letters · doi:10.1063/1.4793400 · Cited by 377
Dynamic Stereochemical Activity of the Sn2+ Lone Pair in Perovskite CsSnBr3
Fabini, D. H., Laurita, G., Bechtel, J. S., Stoumpos, C. C., Evans, H. A., Kontos, A. G., Raptis, Y. S., Falaras, P., Van der Ven, A., Kanatzidis, M. G., et al. (2016) · Journal of the American Chemical Society · doi:10.1021/jacs.6b06287 · Cited by 334
Metadata
- Authors
- Ravel, B., Stern, E. A., Vedrinskii, R. I., & Kraizman, V.
- Venue
- Ferroelectrics
- Publisher
- Informa UK Limited
- Published
- 1998-02
- Volume
- 206
- Issue
- 1
- Pages
- 407-430
- ISSN
- 0015-0193 (ISSN-L)
- 1563-5112
- OpenAlex
- W2045354663
- Cited by
- 355
- References
- 1
- FWCI
- 2.12
- Type
- journal article
- Language
- en
- Open access
- closed
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- Ravel, B., Stern, E. A., Vedrinskii, R. I., & Kraizman, V. (1998). Local structure and the phase transitions of BaTiO3. Ferroelectrics. https://doi.org/10.1080/00150199808009173
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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