Constant-wavelength neutron diffraction study of cubic perovskites BaTaO2N and BaNbO2N
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- KIM Young-Il
- Department of Chemistry, Yeungnam University
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- LEE Eunhye
- Department of Chemistry, Yeungnam University
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Local structural disorder of perovskite oxynitrides BaTaO2N and BaNbO2N is investigated by constant-wavelength neutron powder diffraction measurements at 300 and 6 K. Temperature-dependent diffraction line-broadening analyses together with the Rietveld refinements confirm that both perovskites retain average structures of simple cubic symmetry down to 6 K. While the Ta and Nb atoms in the above oxynitrides have remarkably large displacement parameters, indicative of pronounced octahedral distortions, the rigidity of Ba sublattice seems to suppress the cooperative propagation of long-range octahedral tilting.
収録刊行物
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- Journal of the Ceramic Society of Japan
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Journal of the Ceramic Society of Japan 119 (1389), 371-374, 2011
公益社団法人 日本セラミックス協会
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詳細情報 詳細情報について
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- CRID
- 1390001205288199296
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- NII論文ID
- 130000662441
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- NII書誌ID
- AA12229489
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- ISSN
- 13486535
- 18820743
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- NDL書誌ID
- 11057992
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- CiNii Articles
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- 使用不可