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

研究成果: Article › 査読

3 被引用数 (Scopus)

抄録

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.

本文言語	English
ページ（範囲）	333-336
ページ数	4
ジャーナル	Solid State Ionics
巻	108
号	1-4
DOI	https://doi.org/10.1016/s0167-2738(98)00059-9
出版ステータス	Published - 1998 5月 1
外部発表	はい

ASJC Scopus subject areas

化学 (全般)
材料科学（全般）
凝縮系物理学

文献へのアクセス

10.1016/s0167-2738(98)00059-9

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引用スタイル

@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,

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

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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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