A new LiNbO{sub 3}-type polar oxide with closed-shell cations: ZnPbO{sub 3}

Journal Article · Mon Sep 07 00:00:00 EDT 2015 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4930034· OSTI ID:22494824

Yu, Runze; Hojo, Hajime; Azuma, Masaki ^[1]; Mizoguchi, Teruyasu ^[2]

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1. Materials and Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori, Yokohama 226-8503 (Japan)
2. Institute of Industrial Science, University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 153-8505 (Japan)

A new lithium-niobate (LiNbO{sub 3})-type polar compound, namely, ZnPbO{sub 3} (a = 5.41605(7) Å and c = 14.33151(3) Å), with closed-shell ions only was synthesized under high pressure and high temperature (8 GPa and 1273 K). 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 77 μC/cm{sup 2} along the hexagonal c-axis. Detailed structural analysis indicated that the contribution of Pb{sup 4+} in ZnPbO{sub 3} to the polarization was almost twice as large as that of Sn{sup 4+} in ZnSnO{sub 3}. Transport measurement showed metallic behavior of ZnPbO{sub 3} from room temperature to low temperature despite the fact that both cations are closed-shell ions.

• OSTI ID: 22494824
• Journal Information: Journal of Applied Physics, Vol. 118, Issue 9; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CATIONS
LEAD IONS
LITHIUM COMPOUNDS
NIOBATES
PLUMBATES
POINT CHARGE
POLAR COMPOUNDS
POLARIZATION
PRESSURE RANGE GIGA PA
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
TEMPERATURE RANGE 0400-1000 K
TIN IONS
X-RAY DIFFRACTION
ZINC COMPOUNDS