BaY16Si4O33 containing Ba(SiO4)4 orthosilicates
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Published:2022-11-30
Issue:12
Volume:78
Page:1249-1252
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ISSN:2056-9890
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Container-title:Acta Crystallographica Section E Crystallographic Communications
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language:
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Short-container-title:Acta Cryst E
Author:
Motozawa Shuto,
Kimura Hiromitsu,
Takahashi Junichi,
Simura Rayko,
Yamane HisanoriORCID
Abstract
Single crystals of a new quaternary oxide, barium hexadecayttrium tetrasilicon tritriacontaoxide, BaY16Si4O33, were obtained from a melt-solidified sample prepared by heating a mixture of BaCO3, Y2O3, and SiO2 at 2073 K. X-ray crystal structure analysis revealed that Ba(SiO4)4 orthosilicate clusters in which a Ba atom is surrounded by four SiO4 tetrahedra were isolated in a framework composed of Y and O in the structure of BaY16Si4O33. The dielectric constant measured for polycrystalline ceramics of BaY16Si4O33 sintered at 1953 K was 13 (298 K, 1 MHz), and the thermal expansion coefficient was 8.70 × 10 −6 K−1 (298–873 K), which are close to the values previously reported for Y2O3.
Funder
Tohoku University Center for Gender Equality Promotion
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Japan
Publisher
International Union of Crystallography (IUCr)
Subject
Condensed Matter Physics,General Materials Science,General Chemistry
Cited by
1 articles.
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