Oyo Buturi
Online ISSN : 2188-2290
Print ISSN : 0369-8009
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Zeolite-type compounds with improper ferroelectricity
Hiroki TANIGUCHI
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2019 Volume 88 Issue 10 Pages 668-672

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Abstract

Our group has recently found improper ferroelectric materials in aluminate-sodalite-type compounds that belong to a zeolite-family. The aluminate-sodalite-type compounds are mainly composed of eco-friendly elements, which are ubiquitous in the earth’s crust. A conventional strategy for the development of ferroelectric materials is based on perovskite-type compounds, leading to many practical applications for device elements such as capacitors and frequency filters. Aluminate-sodalite-type ferroelectrics, on the other hand, show excellent performance for pyroelectric energy harvesting, which exceeds that of lead-based perovskite-type compounds, indicating the potential of non-perovskite-type ferroelectrics for functional materials. Here we give an overview of the improper ferroelectricity in aluminate-sodalite-type compounds and discuss their performance for pyroelectric energy harvesting in connection with their improper ferroelectricity.

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© 2019 year The Japan Society of Applied Physics
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