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Issue 27, 2015
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Strong anisotropy of ferroelectricity in lead-free bismuth silicate

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Abstract

Bismuth silicate (Bi2SiO5) was recently suggested as a potential silicate based lead-free ferroelectric material. Here, we show the existence of ferroelectricity and explore the strong anisotropy of local ferroelectricity using piezoresponse force microscopy (PFM). Domain structures are reconstructed using angle-resolved PFM. Furthermore, piezoresponse hysteresis loops and piezoelectric coefficients are spatially investigated at the nanoscale. The obtained results confirm the existence of ferroelectricity with strong c-axis polarization. These results could provide basic information on the anisotropic ferroelectricity in Bi2SiO5 and furthermore suggest its considerable potential for lead-free ferroelectric applications with silicon technologies.

Graphical abstract: Strong anisotropy of ferroelectricity in lead-free bismuth silicate

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Supplementary files

Article information


Submitted
14 May 2015
Accepted
31 May 2015
First published
03 Jun 2015

Nanoscale, 2015,7, 11561-11565
Article type
Paper

Strong anisotropy of ferroelectricity in lead-free bismuth silicate

D. Seol, H. Taniguchi, J. Hwang, M. Itoh, H. Shin, S. W. Kim and Y. Kim, Nanoscale, 2015, 7, 11561
DOI: 10.1039/C5NR03161C

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