A new LiNbO3-type polar oxide with closed-shell cations: ZnPbO3

Runze Yu; Hajime Hojo; Teruyasu Mizoguchi; Masaki Azuma

doi:10.1063/1.4930034

A new LiNbO₃-type polar oxide with closed-shell cations: ZnPbO₃

Runze Yu, Hajime Hojo, Teruyasu Mizoguchi, Masaki Azuma

Functional Materials Science

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18 Citations (Scopus)

Abstract

A new lithium-niobate (LiNbO₃)-type polar compound, namely, ZnPbO₃ (a=5.41605(7) Å and c=14.33151(3) Å), with closed-shell ions only was synthesized under high pressure and high temperature (8GPa and 1273K). A point-charge-model calculation based on atomic positions refined by Rietveld analysis of synchrotron X-ray diffraction data gave an electrical ionic polarization of 77μC/cm² along the hexagonal c-axis. Detailed structural analysis indicated that the contribution of Pb⁴⁺ in ZnPbO₃ to the polarization was almost twice as large as that of Sn⁴⁺ in ZnSnO₃. Transport measurement showed metallic behavior of ZnPbO₃ from room temperature to low temperature despite the fact that both cations are closed-shell ions.

Original language	English
Article number	094103
Journal	Journal of Applied Physics
Volume	118
Issue number	9
DOIs	https://doi.org/10.1063/1.4930034
Publication status	Published - Aug 22 2015

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1063/1.4930034

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title = "A new LiNbO3-type polar oxide with closed-shell cations: ZnPbO3",

abstract = "A new lithium-niobate (LiNbO3)-type polar compound, namely, ZnPbO3 (a=5.41605(7) {\AA} and c=14.33151(3) {\AA}), with closed-shell ions only was synthesized under high pressure and high temperature (8GPa and 1273K). A point-charge-model calculation based on atomic positions refined by Rietveld analysis of synchrotron X-ray diffraction data gave an electrical ionic polarization of 77μC/cm2 along the hexagonal c-axis. Detailed structural analysis indicated that the contribution of Pb4+ in ZnPbO3 to the polarization was almost twice as large as that of Sn4+ in ZnSnO3. Transport measurement showed metallic behavior of ZnPbO3 from room temperature to low temperature despite the fact that both cations are closed-shell ions.",

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T1 - A new LiNbO3-type polar oxide with closed-shell cations

T2 - ZnPbO3

AU - Yu, Runze

AU - Hojo, Hajime

AU - Mizoguchi, Teruyasu

AU - Azuma, Masaki

PY - 2015/8/22

Y1 - 2015/8/22

N2 - A new lithium-niobate (LiNbO3)-type polar compound, namely, ZnPbO3 (a=5.41605(7) Å and c=14.33151(3) Å), with closed-shell ions only was synthesized under high pressure and high temperature (8GPa and 1273K). A point-charge-model calculation based on atomic positions refined by Rietveld analysis of synchrotron X-ray diffraction data gave an electrical ionic polarization of 77μC/cm2 along the hexagonal c-axis. Detailed structural analysis indicated that the contribution of Pb4+ in ZnPbO3 to the polarization was almost twice as large as that of Sn4+ in ZnSnO3. Transport measurement showed metallic behavior of ZnPbO3 from room temperature to low temperature despite the fact that both cations are closed-shell ions.

AB - A new lithium-niobate (LiNbO3)-type polar compound, namely, ZnPbO3 (a=5.41605(7) Å and c=14.33151(3) Å), with closed-shell ions only was synthesized under high pressure and high temperature (8GPa and 1273K). A point-charge-model calculation based on atomic positions refined by Rietveld analysis of synchrotron X-ray diffraction data gave an electrical ionic polarization of 77μC/cm2 along the hexagonal c-axis. Detailed structural analysis indicated that the contribution of Pb4+ in ZnPbO3 to the polarization was almost twice as large as that of Sn4+ in ZnSnO3. Transport measurement showed metallic behavior of ZnPbO3 from room temperature to low temperature despite the fact that both cations are closed-shell ions.

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A new LiNbO₃-type polar oxide with closed-shell cations: ZnPbO₃

Abstract

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