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Electric-field-induced paraelectric to ferroelectric phase transformation in prototypical polycrystalline BaTiO3

Wang, Zhiyang and Webber, Kyle G. and Hudspeth, Jessica M. and Hinterstein, Manuel and Daniels, John E. (2014):
Electric-field-induced paraelectric to ferroelectric phase transformation in prototypical polycrystalline BaTiO3.
In: Applied Physics Letters, AIP Publishing LLC, p. 161903, 105, (16), ISSN 0003-6951, [Online-Edition: http://dx.doi.org/10.1063/1.4898573],
[Article]

Abstract

An electric-field-induced paraelectric cubic to ferroelectric tetragonal phase transformation has been directly observed in prototypical polycrystalline BaTiO3 at temperatures above the Curie point (TC) using in situ high-energy synchrotron X-ray diffraction. The transformation persisted to a maximum temperature of 4 °C above TC. The nature of the observed field-induced transformation and the resulting development of domain texture within the induced phase were dependent on the proximity to the transition temperature, corresponding well to previous macroscopic measurements. The transition electric field increased with increasing temperature above TC, while the magnitude of the resultant tetragonal domain texture at the maximum electric field (4 kV mm−1) decreased at higher temperatures. These results provide insights into the phase transformation behavior of a prototypical ferroelectric and have important implications for the development of future large-strain phase-change actuator materials.

Item Type: Article
Erschienen: 2014
Creators: Wang, Zhiyang and Webber, Kyle G. and Hudspeth, Jessica M. and Hinterstein, Manuel and Daniels, John E.
Title: Electric-field-induced paraelectric to ferroelectric phase transformation in prototypical polycrystalline BaTiO3
Language: English
Abstract:

An electric-field-induced paraelectric cubic to ferroelectric tetragonal phase transformation has been directly observed in prototypical polycrystalline BaTiO3 at temperatures above the Curie point (TC) using in situ high-energy synchrotron X-ray diffraction. The transformation persisted to a maximum temperature of 4 °C above TC. The nature of the observed field-induced transformation and the resulting development of domain texture within the induced phase were dependent on the proximity to the transition temperature, corresponding well to previous macroscopic measurements. The transition electric field increased with increasing temperature above TC, while the magnitude of the resultant tetragonal domain texture at the maximum electric field (4 kV mm−1) decreased at higher temperatures. These results provide insights into the phase transformation behavior of a prototypical ferroelectric and have important implications for the development of future large-strain phase-change actuator materials.

Journal or Publication Title: Applied Physics Letters
Volume: 105
Number: 16
Publisher: AIP Publishing LLC
Uncontrolled Keywords: X-Ray-Diffraction, Barium-Titanate, Temperature, Transition, Pressure, Detector
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Elektromechanik von Oxiden
11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 20 Jan 2015 10:20
Official URL: http://dx.doi.org/10.1063/1.4898573
Identification Number: doi:10.1063/1.4898573
Funders: J.E.D. acknowledges financial support from an AINSE Research Fellowship and an ARC Discovery Project (DP120103968). , K.G.W. acknowledges support from the Deutsche Forschungsgemeinschaft under WE 4972/1-1 and WE 4972/2-1.
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