Cubic (space group: Fmm) iridium phosphide, Ir2P, has been synthesized at high pressure and high temperature. Angle-dispersive synchrotron X-ray diffraction measurements on Ir2P powder using a diamond-anvil cell at room temperature and high pressures (up to 40.6 GPa) yielded a bulk modulus of B[subscript 0] = 306(6) GPa and its pressure derivative B0′ = 6.4(5). Such a high bulk modulus attributed to the short and strongly covalent Ir-P bonds as revealed by first – principles calculations and three-dimensionally distributed [IrP4] tetrahedron network. Indentation testing on a well–sintered polycrystalline sample yielded the hardness of 11.8(4) GPa. Relatively low shear modulus of ~64 GPa from theoretical calculations suggests a complicated overall bonding in Ir2P with metallic, ionic, and covalent characteristics. In addition, a spin glass behavior is indicated by magnetic susceptibility measurements.
Details
- Elastic, Magnetic, and Electronic Properties of Iridium Phosphide Ir2P
- Wang, Pei (Author)
- Wang, Yonggang (Author)
- Wang, Liping (Author)
- Zhang, Xinyu (Author)
- Yu, Xiaohui (Author)
- Zhu, Jinlong (Author)
- Wang, Shanmin (Author)
- Qin, Jiaqian (Author)
- Leinenweber, Kurt (Author)
- Chen, Haihua (Author)
- He, Duanwei (Author)
- Zhao, Yusheng (Author)
- Department of Chemistry and Biochemistry (Contributor)
- Digital object identifier: 10.1038/srep21787
- Identifier TypeInternational standard serial numberIdentifier Value2045-2322
- The final version of this article, as published in Scientific Reports, can be viewed online at: https://www.nature.com/articles/srep21787, opens in a new window
Citation and reuse
Cite this item
This is a suggested citation. Consult the appropriate style guide for specific citation guidelines.
Wang, P., Wang, Y., Wang, L., Zhang, X., Yu, X., Zhu, J., . . . Zhao, Y. (2016). Elastic, magnetic and electronic properties of iridium phosphide Ir2P. Scientific Reports, 6(1). doi:10.1038/srep21787