Hayward, S. A. and Morrison, F. D. and Scott, J. F. (2005) Interaction between quantum paraelectricity and ferroelasticity in SrTiO3. Journal of Physics: Condensed Matter, 17 (43). pp. 7009-7022. DOI https://doi.org/10.1088/0953-8984/17/43/018
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Abstract
The dielectric susceptibility of SrTiO3 is measured as a function of temperature between room temperature and 32 K. These data show an anomaly at approximately 105 K, which is associated with the cubic-tetragonal ferroelastic phase transition. The form of this anomaly is shown to be consistent with biquadratic coupling between the ferroelectric and ferroelastic modes. The quantum paraelectric state of SrTiO3 is studied in the framework of a quantum mechanical Landau potential. The saturation temperature is determined from published measurements of the dielectric susceptibility at very low temperatures. When the coupling to the ferroelastic mode is accounted for, the saturation temperature obtained from these measurements (θS = 20(1) K) is the same as that seen in phase diagrams for the ferroelectric transition, such as TC versus chemical dopant or O isotope content.
Item Type: | Article |
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Uncontrolled Keywords: | 2005 AREP 2005 P IA49 |
Subjects: | 03 - Mineral Sciences |
Divisions: | 03 - Mineral Sciences |
Journal or Publication Title: | Journal of Physics: Condensed Matter |
Volume: | 17 |
Page Range: | pp. 7009-7022 |
Identification Number: | https://doi.org/10.1088/0953-8984/17/43/018 |
Depositing User: | Sarah Humbert |
Date Deposited: | 30 Mar 2011 15:21 |
Last Modified: | 23 Jul 2013 09:58 |
URI: | http://eprints.esc.cam.ac.uk/id/eprint/1674 |
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