Synthesis and characterization of perovskite-type CaPbO3

Ayako Yamamoto; Nellie Khasanova; Xiao Jing Wu; Keiichi Tanabe

doi:10.1016/s0167-2738(98)00059-9

Synthesis and characterization of perovskite-type CaPbO₃

Ayako Yamamoto, Nellie Khasanova, Xiao Jing Wu, Keiichi Tanabe

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

We have synthesized a new perovskite-type compound with nominal composition CaPbO3 under about 6 GPa using a cubic-anvil-type apparatus from a mixed powder of high-purity CaO and PbO₂. The XRD pattern was indexed on the basis of an orthorhombic unit cell with a = 5.667(1) Å, b = 5.879(1) Å and c = 8.147(2) Å. This compound has a distorted perovskite-type structure, while two previously reported types of CaPbO₃ have a fluorite-type structure and an ilmenate-type structure. EDX analysis and the unit cell parameters suggest a deficiency in the Ca site. The electrical resistivity of this compound at room temperature was very high ( > 10⁵ Ω cm) in contrast to the metallic and semiconducting conductivity of BaPbO₃ and SrPbO₃, respectively.

Original language	English
Pages (from-to)	333-336
Number of pages	4
Journal	Solid State Ionics
Volume	108
Issue number	1-4
DOIs	https://doi.org/10.1016/s0167-2738(98)00059-9
Publication status	Published - 1998 May 1
Externally published	Yes

Keywords

Ca-Pb-O
Crystal structure
High-pressure synthesis

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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@article{350c2d62d08f4ec1a862fa2c67003281,

title = "Synthesis and characterization of perovskite-type CaPbO3",

abstract = "We have synthesized a new perovskite-type compound with nominal composition CaPbO3 under about 6 GPa using a cubic-anvil-type apparatus from a mixed powder of high-purity CaO and PbO2. The XRD pattern was indexed on the basis of an orthorhombic unit cell with a = 5.667(1) {\AA}, b = 5.879(1) {\AA} and c = 8.147(2) {\AA}. This compound has a distorted perovskite-type structure, while two previously reported types of CaPbO3 have a fluorite-type structure and an ilmenate-type structure. EDX analysis and the unit cell parameters suggest a deficiency in the Ca site. The electrical resistivity of this compound at room temperature was very high ( > 105 Ω cm) in contrast to the metallic and semiconducting conductivity of BaPbO3 and SrPbO3, respectively.",

keywords = "Ca-Pb-O, Crystal structure, High-pressure synthesis",

author = "Ayako Yamamoto and Nellie Khasanova and Wu, {Xiao Jing} and Keiichi Tanabe",

note = "Funding Information: The authors thank Prof. Y. Syono of the Institute for Materials Research, Tohoku University, for useful discussions. The authors also thank Dr. K. Yoshida of our Laboratory for the electrical resistivity measurements. This work was supported by NEDO. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

year = "1998",

month = may,

day = "1",

doi = "10.1016/s0167-2738(98)00059-9",

language = "English",

volume = "108",

pages = "333--336",

journal = "Solid State Ionics",

issn = "0167-2738",

publisher = "Elsevier",

number = "1-4",

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T1 - Synthesis and characterization of perovskite-type CaPbO3

AU - Yamamoto, Ayako

AU - Khasanova, Nellie

AU - Wu, Xiao Jing

AU - Tanabe, Keiichi

N1 - Funding Information: The authors thank Prof. Y. Syono of the Institute for Materials Research, Tohoku University, for useful discussions. The authors also thank Dr. K. Yoshida of our Laboratory for the electrical resistivity measurements. This work was supported by NEDO. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 1998/5/1

Y1 - 1998/5/1

N2 - We have synthesized a new perovskite-type compound with nominal composition CaPbO3 under about 6 GPa using a cubic-anvil-type apparatus from a mixed powder of high-purity CaO and PbO2. The XRD pattern was indexed on the basis of an orthorhombic unit cell with a = 5.667(1) Å, b = 5.879(1) Å and c = 8.147(2) Å. This compound has a distorted perovskite-type structure, while two previously reported types of CaPbO3 have a fluorite-type structure and an ilmenate-type structure. EDX analysis and the unit cell parameters suggest a deficiency in the Ca site. The electrical resistivity of this compound at room temperature was very high ( > 105 Ω cm) in contrast to the metallic and semiconducting conductivity of BaPbO3 and SrPbO3, respectively.

AB - We have synthesized a new perovskite-type compound with nominal composition CaPbO3 under about 6 GPa using a cubic-anvil-type apparatus from a mixed powder of high-purity CaO and PbO2. The XRD pattern was indexed on the basis of an orthorhombic unit cell with a = 5.667(1) Å, b = 5.879(1) Å and c = 8.147(2) Å. This compound has a distorted perovskite-type structure, while two previously reported types of CaPbO3 have a fluorite-type structure and an ilmenate-type structure. EDX analysis and the unit cell parameters suggest a deficiency in the Ca site. The electrical resistivity of this compound at room temperature was very high ( > 105 Ω cm) in contrast to the metallic and semiconducting conductivity of BaPbO3 and SrPbO3, respectively.

KW - Ca-Pb-O

KW - Crystal structure

KW - High-pressure synthesis

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DO - 10.1016/s0167-2738(98)00059-9

M3 - Article

AN - SCOPUS:0032074473

VL - 108

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EP - 336

JO - Solid State Ionics

JF - Solid State Ionics

SN - 0167-2738

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