1. High pressure synthesis and characterization of noble metal nitride IrN x .
- Author
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Ding, Zhanhui, Qiu, Lixia, Li, Yongsheng, Zheng, Dafang, Li, Yongfeng, Yao, Bin, Liu, Lei, Zheng, Weitao, and Liu, Xiaoyang
- Subjects
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IRIDIUM compound synthesis , *HIGH pressure (Technology) , *PRECIOUS metals , *NITRIDES , *CHEMICAL decomposition , *CHEMICAL reactions , *TEMPERATURE effect , *X-ray photoelectron spectroscopy - Abstract
Abstract: Novel iridium nitrides (IrN x ) have been synthesized from a double decomposition reaction between IrCl3 and Li3N powders under high pressure (5GPa) and high temperature (1273K) conditions. X-ray diffraction and Raman spectra analysis reveals that the as-synthesized IrN x have a cubic crystal structure. The lattice constants of IrN x are 4.06Å. The x-ray photoelectron spectrum indicates the N content (x) in IrN x is ∼0.3. The first-principles calculations further suggest that iridium nitride is face-centered cubic structure, which has not ever been reported experimentally. Such structure is mechanical stable even under 10GPa and 1273K conditions. [Copyright &y& Elsevier]
- Published
- 2013
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