Synthesis and crystal structure of a new niobium oxynitride, Nb2N0.88O0.12

Kohta Yamada; Hidetoshi Masuda; Nobuaki Sato; Takeo Fujino

doi:10.1006/jssc.1999.8545

Synthesis and crystal structure of a new niobium oxynitride, Nb₂N_0.88O_0.12

Kohta Yamada, Hidetoshi Masuda, Nobuaki Sato, Takeo Fujino

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

4 Citations (Scopus)

Abstract

A new niobium oxynitride Nb₂N_0.88O_0.12 has been synthesized by reducing Nb₂O₅ in a stream of H₂ gas containing 0.07% N₂ at 1080°C for 5 weeks. The compound crystallizes in a hexagonal system with space group P3̄1m, and Z = 3. The lattice parameters are a = 5.2916 ± 0.0001 Å and c = 4.9987 ± 0.0001 Å. In this space group, the nitrogen/oxygen atoms statistically occupy the 1a and 2d positions, and niobium atoms occupy the 6k position. This structure is the same as that of β-Nb₂N (ε-Fe₂N type), and the compound is regarded as a solid solution of β-Nb₂N and hypothetical Nb₂O of the same crystal structure. The crystallographic parameters were refined by using the Rietveld method. The chemical bonding of this compound seems to have a significant covalent and/or metallic character in the ionic bonding. (C) 2000 Academic Press.

Original language	English
Pages (from-to)	36-42
Number of pages	7
Journal	Journal of Solid State Chemistry
Volume	150
Issue number	1
DOIs	https://doi.org/10.1006/jssc.1999.8545
Publication status	Published - 2000
Externally published	Yes

Keywords

Crystal structure
H reduction
Niobium oxynitride
Rietveld refinement

ASJC Scopus subject areas

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

Access to Document

10.1006/jssc.1999.8545

Cite this

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title = "Synthesis and crystal structure of a new niobium oxynitride, Nb2N0.88O0.12",

abstract = "A new niobium oxynitride Nb2N0.88O0.12 has been synthesized by reducing Nb2O5 in a stream of H2 gas containing 0.07% N2 at 1080°C for 5 weeks. The compound crystallizes in a hexagonal system with space group P{\=3}1m, and Z = 3. The lattice parameters are a = 5.2916 ± 0.0001 {\AA} and c = 4.9987 ± 0.0001 {\AA}. In this space group, the nitrogen/oxygen atoms statistically occupy the 1a and 2d positions, and niobium atoms occupy the 6k position. This structure is the same as that of β-Nb2N (ε-Fe2N type), and the compound is regarded as a solid solution of β-Nb2N and hypothetical Nb2O of the same crystal structure. The crystallographic parameters were refined by using the Rietveld method. The chemical bonding of this compound seems to have a significant covalent and/or metallic character in the ionic bonding. (C) 2000 Academic Press.",

keywords = "Crystal structure, H reduction, Niobium oxynitride, Rietveld refinement",

author = "Kohta Yamada and Hidetoshi Masuda and Nobuaki Sato and Takeo Fujino",

year = "2000",

doi = "10.1006/jssc.1999.8545",

language = "English",

volume = "150",

pages = "36--42",

journal = "Journal of Solid State Chemistry",

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publisher = "Academic Press Inc.",

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TY - JOUR

T1 - Synthesis and crystal structure of a new niobium oxynitride, Nb2N0.88O0.12

AU - Yamada, Kohta

AU - Masuda, Hidetoshi

AU - Sato, Nobuaki

AU - Fujino, Takeo

PY - 2000

Y1 - 2000

N2 - A new niobium oxynitride Nb2N0.88O0.12 has been synthesized by reducing Nb2O5 in a stream of H2 gas containing 0.07% N2 at 1080°C for 5 weeks. The compound crystallizes in a hexagonal system with space group P3̄1m, and Z = 3. The lattice parameters are a = 5.2916 ± 0.0001 Å and c = 4.9987 ± 0.0001 Å. In this space group, the nitrogen/oxygen atoms statistically occupy the 1a and 2d positions, and niobium atoms occupy the 6k position. This structure is the same as that of β-Nb2N (ε-Fe2N type), and the compound is regarded as a solid solution of β-Nb2N and hypothetical Nb2O of the same crystal structure. The crystallographic parameters were refined by using the Rietveld method. The chemical bonding of this compound seems to have a significant covalent and/or metallic character in the ionic bonding. (C) 2000 Academic Press.

AB - A new niobium oxynitride Nb2N0.88O0.12 has been synthesized by reducing Nb2O5 in a stream of H2 gas containing 0.07% N2 at 1080°C for 5 weeks. The compound crystallizes in a hexagonal system with space group P3̄1m, and Z = 3. The lattice parameters are a = 5.2916 ± 0.0001 Å and c = 4.9987 ± 0.0001 Å. In this space group, the nitrogen/oxygen atoms statistically occupy the 1a and 2d positions, and niobium atoms occupy the 6k position. This structure is the same as that of β-Nb2N (ε-Fe2N type), and the compound is regarded as a solid solution of β-Nb2N and hypothetical Nb2O of the same crystal structure. The crystallographic parameters were refined by using the Rietveld method. The chemical bonding of this compound seems to have a significant covalent and/or metallic character in the ionic bonding. (C) 2000 Academic Press.

KW - Crystal structure

KW - H reduction

KW - Niobium oxynitride

KW - Rietveld refinement

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