Elastic, magnetic and electronic properties of iridium phosphide Ir2P

Pei Wang, Yonggang Wang, Liping Wang, Xinyu Zhang, Xiaohui Yu, Jinlong Zhu, Shanmin Wang, Jiaqian Qin, Kurt Leinenweber, Haihua Chen, Duanwei He, Yusheng Zhao

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Abstract

Cubic (space group: Fmm) iridium phosphide, Ir 2 P, has been synthesized at high pressure and high temperature. Angle-dispersive synchrotron X-ray diffraction measurements on Ir 2 P powder using a diamond-anvil cell at room temperature and high pressures (up to 40.6 GPa) yielded a bulk modulus of B 0 = 306(6) GPa and its pressure derivative B 0 ′ = 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 [IrP 4 ] 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 Ir 2 P with metallic, ionic, and covalent characteristics. In addition, a spin glass behavior is indicated by magnetic susceptibility measurements.

Original languageEnglish (US)
Article number21787
JournalScientific Reports
Volume6
DOIs
StatePublished - Feb 24 2016

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Wang, P., Wang, Y., Wang, L., Zhang, X., Yu, X., Zhu, J., Wang, S., Qin, J., Leinenweber, K., Chen, H., He, D., & Zhao, Y. (2016). Elastic, magnetic and electronic properties of iridium phosphide Ir2P. Scientific Reports, 6, [21787]. https://doi.org/10.1038/srep21787