Zn/Al-centered tetrahedral framework oxide Ba4Zn2Al2O9

Rayko Simura; Kyosuke Sawamura; Hisanori Yamane

doi:10.1016/j.jssc.2021.122830

Zn/Al-centered tetrahedral framework oxide Ba₄Zn₂Al₂O₉

Rayko Simura, Kyosuke Sawamura, Hisanori Yamane

Division of Inorganic Material Research

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

1 Citation (Scopus)

Abstract

Single crystals of Ba₄Zn₂Al₂O₉ were obtained by heating a mixture of BaCO₃, ZnO, and Al₂O₃ at 1413 K in a dry air atmosphere. X-ray crystal structure analysis revealed that the compound crystalizes in a monoclinic cell (a = 6.9444(2) Å, b = 5.91650(10) Å, c = 13.5842(3) Å, β = 103.955(1)°) with the space group P2₁/n. The crystal structure can be characterized as a substitution of Zn/AlO₄ tetrahedra for B-cation-centered O octahedra of a perovskite-type structure (ABO₃). The vacant spaces surrounded by planes of the tetrahedra with eight- and ten-fold coordinations of O atoms are occupied by Ba atoms. The melting temperature (1444 K), electrical conductivity (1.5 × 10^–6 S cm^–1 at 1073 K), relative permittivity (24 at 298 K and 1 MHz), and linear thermal expansion coefficient (9.72 × 10^–6 K^–1 at 298–873 K) of a polycrystalline bulk sample were measured.

Original language	English
Article number	122830
Journal	Journal of Solid State Chemistry
Volume	307
DOIs	https://doi.org/10.1016/j.jssc.2021.122830
Publication status	Published - 2022 Mar

Keywords

Barium zinc aluminate
Dielectric property
Electrical conductivity
Thermal expansion
Zn/AlO tetrahedral framework

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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10.1016/j.jssc.2021.122830

Cite this

@article{398292d0373e41669ff84d7d379435f4,

title = "Zn/Al-centered tetrahedral framework oxide Ba4Zn2Al2O9",

abstract = "Single crystals of Ba4Zn2Al2O9 were obtained by heating a mixture of BaCO3, ZnO, and Al2O3 at 1413 K in a dry air atmosphere. X-ray crystal structure analysis revealed that the compound crystalizes in a monoclinic cell (a = 6.9444(2) {\AA}, b = 5.91650(10) {\AA}, c = 13.5842(3) {\AA}, β = 103.955(1)°) with the space group P21/n. The crystal structure can be characterized as a substitution of Zn/AlO4 tetrahedra for B-cation-centered O octahedra of a perovskite-type structure (ABO3). The vacant spaces surrounded by planes of the tetrahedra with eight- and ten-fold coordinations of O atoms are occupied by Ba atoms. The melting temperature (1444 K), electrical conductivity (1.5 × 10–6 S cm–1 at 1073 K), relative permittivity (24 at 298 K and 1 MHz), and linear thermal expansion coefficient (9.72 × 10–6 K–1 at 298–873 K) of a polycrystalline bulk sample were measured.",

keywords = "Barium zinc aluminate, Dielectric property, Electrical conductivity, Thermal expansion, Zn/AlO tetrahedral framework",

author = "Rayko Simura and Kyosuke Sawamura and Hisanori Yamane",

note = "Funding Information: We would like to thank Ms. M. Takaishi for conducting part of the synthesis and the sample preparation and Mr. T. Kamaya (Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University) for the EPMA measurement. This work was supported by Japan Society for the Promotion of Science (JSPS) KAKENHI Grant Number JP18H05347 (RS), partly by the Dynamic Alliance for Open Innovation Bridging Human, Environment and Materials in Network Joint Research Center for Materials and Device (HY), and partly by the Support Prorject from Center for Gender Equality Promotion, Tohoku University, Japan (RS). Publisher Copyright: {\textcopyright} 2021",

year = "2022",

month = mar,

doi = "10.1016/j.jssc.2021.122830",

language = "English",

volume = "307",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Academic Press Inc.",

}

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T1 - Zn/Al-centered tetrahedral framework oxide Ba4Zn2Al2O9

AU - Simura, Rayko

AU - Sawamura, Kyosuke

AU - Yamane, Hisanori

N1 - Funding Information: We would like to thank Ms. M. Takaishi for conducting part of the synthesis and the sample preparation and Mr. T. Kamaya (Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University) for the EPMA measurement. This work was supported by Japan Society for the Promotion of Science (JSPS) KAKENHI Grant Number JP18H05347 (RS), partly by the Dynamic Alliance for Open Innovation Bridging Human, Environment and Materials in Network Joint Research Center for Materials and Device (HY), and partly by the Support Prorject from Center for Gender Equality Promotion, Tohoku University, Japan (RS). Publisher Copyright: © 2021

PY - 2022/3

Y1 - 2022/3

N2 - Single crystals of Ba4Zn2Al2O9 were obtained by heating a mixture of BaCO3, ZnO, and Al2O3 at 1413 K in a dry air atmosphere. X-ray crystal structure analysis revealed that the compound crystalizes in a monoclinic cell (a = 6.9444(2) Å, b = 5.91650(10) Å, c = 13.5842(3) Å, β = 103.955(1)°) with the space group P21/n. The crystal structure can be characterized as a substitution of Zn/AlO4 tetrahedra for B-cation-centered O octahedra of a perovskite-type structure (ABO3). The vacant spaces surrounded by planes of the tetrahedra with eight- and ten-fold coordinations of O atoms are occupied by Ba atoms. The melting temperature (1444 K), electrical conductivity (1.5 × 10–6 S cm–1 at 1073 K), relative permittivity (24 at 298 K and 1 MHz), and linear thermal expansion coefficient (9.72 × 10–6 K–1 at 298–873 K) of a polycrystalline bulk sample were measured.

AB - Single crystals of Ba4Zn2Al2O9 were obtained by heating a mixture of BaCO3, ZnO, and Al2O3 at 1413 K in a dry air atmosphere. X-ray crystal structure analysis revealed that the compound crystalizes in a monoclinic cell (a = 6.9444(2) Å, b = 5.91650(10) Å, c = 13.5842(3) Å, β = 103.955(1)°) with the space group P21/n. The crystal structure can be characterized as a substitution of Zn/AlO4 tetrahedra for B-cation-centered O octahedra of a perovskite-type structure (ABO3). The vacant spaces surrounded by planes of the tetrahedra with eight- and ten-fold coordinations of O atoms are occupied by Ba atoms. The melting temperature (1444 K), electrical conductivity (1.5 × 10–6 S cm–1 at 1073 K), relative permittivity (24 at 298 K and 1 MHz), and linear thermal expansion coefficient (9.72 × 10–6 K–1 at 298–873 K) of a polycrystalline bulk sample were measured.

KW - Barium zinc aluminate

KW - Dielectric property

KW - Electrical conductivity

KW - Thermal expansion

KW - Zn/AlO tetrahedral framework

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DO - 10.1016/j.jssc.2021.122830

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