Abstract
A lead-free ferroelectric: The occurrence of ferroelectricity is demonstrated in a silicate-based compound (Bi2SiO5, see picture), by direct observation of polarization switching. The mechanism of ferroelectricity in Bi2SiO5 has been studied by Raman scattering, transmission electron microscopy, X-ray powder diffraction, and first-principles calculations. The observed ferroelectricity stems from twisting of the one-dimensional SiO4 tetrahedral chain. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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Taniguchi, H., Kuwabara, A., Kim, J., Kim, Y., Moriwake, H., Kim, S., … Itoh, M. (2013). Ferroelectricity driven by twisting of silicate tetrahedral chains. Angewandte Chemie - International Edition, 52(31), 8088–8092. https://doi.org/10.1002/anie.201302188
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