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Phase transition and dielectric properties of a new ferroelectric, N2H5Al(s04)212H2O

Toshio Ôsaka, Takashi Horiuchi, Kazunori Akaho, M. Komukae, Yasuharu Makita

Open publisher page 3 citations

Abstract

The dielectric property of N2H5A1(SO4)2·12H2O was studied below room temperature. The dielectric constant measured along the [100] direction shows a discontinuous change at the Curie temperature of Tc = -109.6 °C on cooling and obeys the Curie-Weiss law above T. The pyroelectric charge was measured after poling the crystal. It was found that the crystal becomes ferroelectric below Tc = -107.8 °C on warming, and has the spontaneous polarization of 3.3 μC/cm2 at −186°C.

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What this paper is about

The dielectric property of N2H5A1(SO4)2·12H2O was studied below room temperature. The dielectric constant measured along the [100] direction shows a discontinuous change at the Curie temperature of Tc = -109.6 °C on cooling and obeys the Curie-Weiss law above T. The pyroelectric charge was measured after poling the crystal. It was found that the crystal becomes ferroelectric below Tc = -107.8 °C on warming, and has the spontaneous polarization of 3.3 μC/cm2 at −186°C.

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OpenAlex reports 3 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

The dielectric property of N2H5A1(SO4)2·12H2O was studied below room temperature. The dielectric constant measured along the [100] direction shows a discontinuous change at the Curie temperature of Tc = -109.6 °C on cooling and obeys the Curie-Weiss law above T. The pyroelectric charge was measured after poling the crystal. It was found that the crystal becomes ferroelectric below Tc = -107.8 °C on warming, and has the spontaneous polarization of 3.3 μC/cm2 at −186°C.

Key concepts: Materials science, Dielectric, Ferroelectricity, Curie temperature, Pyroelectricity, Poling, Condensed matter physics, Phase transition

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Phase transition and dielectric properties of a new ferroelectric, N2H5Al(s04)212H2O — Research Paper | ScholarLens