Thermal and Electric Field-Dependent Evolution of Domain Structures in Polycrystalline <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mtext>BaTiO</mml:mtext><mml:mn mathvariant="bold">3</mml:mn></mml:msub></mml:math> Using the 3D-XRD Technique

Varlioglu, Mesut; Lienert, Ulrich; Park, Jun-Sang; Jones, Jacob L.; Üstündag, Ersan

doi:https://doi.org/10.1155/2010/910793

Texture, Stress, and Microstructure

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Research Article | Open Access

Volume 2010 | Article ID 910793 | https://doi.org/10.1155/2010/910793

Thermal and Electric Field-Dependent Evolution of Domain Structures in Polycrystalline BaTiO3 Using the 3D-XRD Technique

Mesut Varlioglu,¹Ulrich Lienert,²Jun-Sang Park,³Jacob L. Jones,⁴and Ersan Üstündag¹

Academic Editor: Adam Morawiec

Received23 Jun 2010

Accepted01 Oct 2010

Published07 Nov 2010

Abstract

The evolution of ferroelectric domain structures inside a single grain embedded in a polycrystalline BaTiO3 ceramic was investigated under temperature and electric field using the three-dimensional X-ray diffraction (3D-XRD) method. The orientation of domains within the grain was studied during the phase transformation from the cubic to tetragonal crystal structure. The peak widths broadened from 0.10 ± 0.01∘ to 0.29±0.08∘ along the azimuthal direction during cooling. Four individual tetragonal domain structures were developed from the cubic grain. A twinning model based on {101} habit planes is discussed. While the twinning model predicts 89.47∘ misorientation between 90∘ domains and 1.049∘ misorientation between domain variants, the measured misorientations neither support the twinning model nor are the domain structures mutually orthogonal. The average misorientation of the domain structures at room temperature with respect to the cubic grain was about 0.3∘. Upon application of an electric field, the volume fractions of the domain structures changed systematically favoring growth of domain structures with small polarization angle with respect to applied field direction. No rotation of domain structures was observed upon application of an electric field which is consistent with domain boundary migration.

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Copyright

Copyright © 2010 Mesut Varlioglu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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