Ferroelectricity of Deuterated Triammonium Deuterium Disulfate and Isotope Effect on Ferroelectric Activity

Toshio Osaka; Yasuharu Makita; Kazuo Gesi

doi:10.1143/JPSJ.43.933

Journal of the Physical Society of Japan

Online ISSN : 1347-4073
Print ISSN : 0031-9015
ISSN-L : 0031-9015

Ferroelectricity of Deuterated Triammonium Deuterium Disulfate and Isotope Effect on Ferroelectric Activity

Toshio Osaka, Yasuharu Makita, Kazuo Gesi

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1977 Volume 43 Issue 3 Pages 933-936

DOI https://doi.org/10.1143/JPSJ.43.933

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Abstract

The dielectric properties of deuterated triammonium deuterium disulfate have been studied at 1 atm in the temperature region between −170°C and 25°C. It has been found that the crystal is ferroelectric in two phases. The spontaneous polarization is 2.15 μCoul·cm⁻² at −170°C. The present results indicate a large isotope effect on ferroelectric activity.

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