Crystal chemistry and physical properties of 3d transition metal nitrides derived by chemical reaction at sub-megabar pressure range
| Project/Area Number |
15H05542
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Physical properties of metals/Metal-base materials
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| Research Institution | Nagoya University |
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Principal Investigator |
NIWA Ken 名古屋大学, 工学研究科, 准教授 (40509030)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥16,640,000 (Direct Cost: ¥12,800,000、Indirect Cost: ¥3,840,000)
Fiscal Year 2017: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2015: ¥12,480,000 (Direct Cost: ¥9,600,000、Indirect Cost: ¥2,880,000)
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| Keywords | 窒化物 / 結晶構造 / 電子 / 磁性 / 超高圧合成 / 電子構造 / 遷移金属窒化物 / 超高圧力 / 超臨界流体 / 金属窒化物 / 多窒化物 / 遷移金属元素 / 超臨界窒素 |
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| Outline of Final Research Achievements |
Highly coordinated iron, cobalt, nickel and copper nitrides were successfully synthesized via direct chemical reaction between a transition metal and molecular nitrogen at the pressures above approximately 30 GPa. The high pressure in-situ X-ray diffraction and Raman scattering measurements revealed that the synthesized novel transition metal nitrides were found to crystallize into the NiAs-type, marcasite-type or CdI2-type structures, in which NiAs-type FeN and marcasite-type CoN2 could be quenched at ambient pressure while marcasite-type NiN2 and CdI2-type CuN2 were found to be unstable at ambient pressure. A first-principles electronic band calculation suggests that the NiAs-type FeN and marcasite-type CoN2 exhibit metallic characteristics. The present results indicate that the crystal structures are based on the hexagonal closed packing arrangement of nitrogen atoms and the transition metal atoms occupy the highly coordinated octahedral sites.
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Report
(4 results)
Research Products
(36 results)
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[Journal Article] Valence-Band Electronic Structures of High-Pressure-Phase-PdF2-type Platinum-Group-Metal Dioxides MO2 (M = Ru, Rh, Ir, Pt)2018
Author(s)
K. Soda, D. Kobayashi, T. Mizui, M. Kato, Y. Shirako, K. Niwa, M. Hasegawa, M. Akaogi, H. Kojitani, E. Ikenaga, T. Muro
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Journal Title
Journal of the Physical Society of Japan
Volume: 87
Issue: 4
Pages: 044701-044701
DOI
NAID
Related Report
Peer Reviewed
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[Journal Article] Micro-beam hard X-ray photoemission study on platinum-group metal pernitrides2017
Author(s)
K. Soda, T. Mizui, M. Komabuchi, M. Kato, T. Terabe, K. Suzuki, K. Niwa, Y. Shirako, M. Hasegawa, M. Akaogi, H. Kojitani, E. Ikenaga
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Journal Title
J. Phys. Soc. Japan
Volume: 86
Issue: 6
Pages: 1-5
DOI
NAID
Related Report
Peer Reviewed
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[Presentation] High pressure synthesis of new transition metal nitrides with using laser-heated diamond anvil cell2016
Author(s)
Ken Niwa, Toshiki Terabe, Yuichi Shirako, Shunsuke Muto, Kazuyoshi Tatsumi, Tatsuya Mizui, Kazuo Soda, Masashi Hasegawa
Organizer
International Conference on PROCESSING & MANUFACTURING OF ADVANCED MATERIALS Processing, Fabrication, Properties, Applications(THERMEC2016)
Related Report
Int'l Joint Research
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[Presentation] High Pressure Synthesis and Characterization of Transition Metal Nitrides2015
Author(s)
Ken Niwa, Kentaro Suzuki, Toshiki Terabe, Yuichi Shirako, Shunsuke Muto, Kazuyoshi Tatsumi, Tatsuya Mizui, Kazuo Soda, Takumi Kikegawa, Masashi Hasegawa
Organizer
Joint AIRAPT-25th & EHPRG-53rd International Conference on High Pressure Science and Technology
Place of Presentation
Complutense University of Madrid (Madrid, SPAIN)
Year and Date
2015-08-30
Related Report
