Niobium nitride
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| Names | |
|---|---|
| IUPAC name
Niobium nitride
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| Identifiers | |
| ECHA InfoCard | 100.042.132 |
PubChem CID
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| Properties | |
| NbN | |
| Molar mass | 106.91 g/mol |
| Appearance | gray solid |
| Density | 8.470 g/cm3 |
| Melting point | 2,573 °C (4,663 °F; 2,846 K) |
| reacts to form ammonia | |
| Structure | |
| cubic, cF8 | |
| Fm3m, No. 225 | |
| Hazards | |
| Flash point | Non-flammable |
| Safety data sheet (SDS) | External MSDS |
| Related compounds | |
Other cations
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Vanadium nitride Tantalum nitride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Niobium nitride is a compound of niobium and nitrogen (nitride) with the chemical formula NbN. At low temperatures (about 16 K) NbN becomes a superconductor, and is used in detectors for infrared light.[1][2][3]
Uses
[edit]- Niobium nitride's main use is as a superconductor.
- Detectors based on it can detect a single photon in the 1-10 micrometer section of the infrared spectrum,[4] which is important for astronomy and telecommunications. It can detect changes up to 25 gigahertz.
- Superconducting NbN nanowires can be used in particle detectors with high magnetic fields.[5]
- Niobium nitride is also used in absorbing anti-reflective coatings.
- In 2015, it was reported that Panasonic Corp. has developed a photocatalyst based on niobium nitride that can absorb 57% of sunlight to support the decomposition of water to produce hydrogen gas as fuel for electrochemical fuel cells.[6]
References
[edit]- ^ Y. M. Shy, L. E. Toth and R. Somasundaram (1973). "Superconducting properties, electrical resistivities, and structure of NbN thin films". Journal of Applied Physics. 44 (12): 5539–5545. Bibcode:1973JAP....44.5539S. doi:10.1063/1.1662193.
- ^ J. W. Kooi; J. J. A. Baselmans; M. Hajenius; J. R. Gao; T. M. Klapwijk; P. Dieleman; A. Baryshev; G. de Lange (2007). "IF impedance and mixer gain of NbN hot electron bolometers" (PDF). Journal of Applied Physics. 101 (4): 044511. Bibcode:2007JAP...101d4511K. doi:10.1063/1.2400086.
- ^ S. P. Chockalingam; Madhavi Chand; John Jesudasan; Vikram Tripathi; Pratap Raychaudhuri (2009). "Superconducting properties and Hall effect in epitaxial NbN thin films". Physical Review B. 77 (21): 214503. arXiv:0804.2945. Bibcode:2008PhRvB..77u4503C. doi:10.1103/PhysRevB.77.214503. S2CID 14097116.
- ^ M Hajenius, J J A Baselmans, J R Gao, T M Klapwijk, P A J de Korte, B Voronov and G Gol'tsman (2004). "Low noise NbN superconducting hot electron bolometer mixers at 1.9 and 2.5 THz". Superconductor Science and Technology. 17 (5): S224–S228. Bibcode:2004SuScT..17S.224H. doi:10.1088/0953-2048/17/5/026. S2CID 250740737.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ^ "When superconductivity material science meets nuclear physics". phys.org. Retrieved 9 June 2020.
- ^ Yamamura, Tetsushi (August 2, 2015). "Panasonic moves closer to home energy self-sufficiency with fuel cells". Asahi Shimbun. Archived from the original on August 7, 2015. Retrieved 2015-08-02.