Dul'kin, Evgeniy and Salje, Ekhard K. H. and Aktas, Oktay and Whatmore, Roger W. and Roth, Michael (2014) Ferroelectric precursor behavior of highly cation-ordered PbSc0.5Ta0.5O3 detected by acoustic emission: Tweed and polar nanoregions. Applied Physics Letters, 105 (21). p. 212901. ISSN 0003-6951, ESSN: 1077-3118 DOI https://doi.org/10.1063/1.4902511
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Dul'kin et al. - 2014 - Ferroelectric precursor behavior of highly cation-.pdf - Published Version Restricted to Registered users only Download (701kB) |
Abstract
Highly ordered ferroelectric PbSc0.5 Ta 0.5O3 crystals were studied by acoustic emission over a wide temperature range. Acoustic emission was found at three characteristic temperatures: 330, 409, and ≈600 K, which are close to those, known from the same disordered crystals, containing polar nanoregions. The microstructure in our crystals contains structural “tweed” rather than nanoregions. The coincidence of acoustic emission temperatures points towards a close structural relationship between nanoregions and “tweed.” Under electric field, these temperatures shift similar to “critical end point” behavior. The obtained data prove that acoustic emission detects signals in a wider parameter space than previously expected.
Item Type: | Article |
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Uncontrolled Keywords: | 2014AREP; IA68; |
Subjects: | 03 - Mineral Sciences |
Divisions: | 03 - Mineral Sciences |
Journal or Publication Title: | Applied Physics Letters |
Volume: | 105 |
Page Range: | p. 212901 |
Identification Number: | https://doi.org/10.1063/1.4902511 |
Depositing User: | Sarah Humbert |
Date Deposited: | 23 Jan 2015 16:27 |
Last Modified: | 27 Jan 2015 18:34 |
URI: | http://eprints.esc.cam.ac.uk/id/eprint/3216 |
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