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Wiley, Advanced Materials, 18(27), p. 2883-2889, 2015

DOI: 10.1002/adma.201405452

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Morphotropic Phase Boundary in the Pb-Free (1 −x)BiTi3/8Fe2/8Mg3/8O3-xCaTiO3System: Tetragonal Polarization and Enhanced Electromechanical Properties

Journal article published in 2015 by Pranab Mandal, Alicia Manjón-Sanz, Alex J. Corkett, Tim P. Comyn, Karl Dawson ORCID, Timothy Stevenson, James Bennett, Leonard F. Henrichs ORCID, Andrew J. Bell, Eiji Nishibori, Masaki Takata, Marco Zanella, Michelle R. Dolgos, Umut Adem, Xinming Wan and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Lead-free bismuth-based perovskite oxides with polarization directed along the [001]p primitive perovskite unit cell edge, analogous to tetragonal PbTiO3, are synthesized at ambient pressure. Enhanced piezoelectric properties, large polarizations, and high depolarization temperatures are observed in the wide morphotropic phase boundary region formed with a rhombohedral phase, with up to 92.5% Bi on the perovskite A site. © 2015 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.