Elastic anomalies associated with domain switching in BaTiO3 single crystals under in situ electrical cycling

Pesquera, D. and Casals, B. and Thompson, J. E. and Nataf, G. F. and Moya, X. and Carpenter, M. A. (2019) Elastic anomalies associated with domain switching in BaTiO3 single crystals under in situ electrical cycling. APL Materials, 7 (5). 051109. ISSN 2166-532X DOI https://doi.org/10.1063/1.5088749

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Abstract

The elastic response of BaTiO3 single crystals during electric field cycling at room temperature has been studied using in situ Resonant Ultrasound Spectroscopy (RUS), which allows monitoring of both the elastic and anelastic changes caused by ferroelectric polarization switching. We find that the first ferroelectric switching of a virgin single crystal is dominated by ferroelastic 90° switching. In subsequent ferroelectric switching, ferroelastic switching is reduced by domain pinning and by the predominance of 180° ferroelectric domains, as confirmed by polarized light microscopy. RUS under in situ electric field therefore demonstrates to be an effective technique for the investigation of electromechanical coupling in ferroelectrics.

Item Type: Article
Uncontrolled Keywords: 2019AREP; IA76
Subjects: 03 - Mineral Sciences
Divisions: 03 - Mineral Sciences
07 - Gold Open Access
Journal or Publication Title: APL Materials
Volume: 7
Page Range: 051109
Identification Number: https://doi.org/10.1063/1.5088749
Depositing User: Sarah Humbert
Date Deposited: 16 Apr 2020 23:43
Last Modified: 16 Apr 2020 23:43
URI: http://eprints.esc.cam.ac.uk/id/eprint/4692

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