title: Elastic, magnetic and electronic properties of iridium phosphide Ir2P.
abstract: 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 B0 = 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.
authors.affiliation: Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, People's Republic of China.|High Pressure Science and Engineering Center, University of Nevada, Las Vegas, Las Vegas, Nevada 89154, United States.
authors.forename: Pei
authors.initials: P
authors.lastname: Wang
authors.affiliation: High Pressure Science and Engineering Center, University of Nevada, Las Vegas, Las Vegas, Nevada 89154, United States.
authors.forename: Yonggang
authors.initials: Y
authors.lastname: Wang
authors.affiliation: High Pressure Science and Engineering Center, University of Nevada, Las Vegas, Las Vegas, Nevada 89154, United States.
authors.forename: Liping
authors.initials: L
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, People's Republic of China.
authors.forename: Xinyu
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
authors.forename: Xiaohui
authors.initials: X
authors.lastname: Yu
authors.affiliation: High Pressure Science and Engineering Center, University of Nevada, Las Vegas, Las Vegas, Nevada 89154, United States.
authors.forename: Jinlong
authors.initials: J
authors.lastname: Zhu
authors.affiliation: High Pressure Science and Engineering Center, University of Nevada, Las Vegas, Las Vegas, Nevada 89154, United States.
authors.forename: Shanmin
authors.initials: S
authors.lastname: Wang
authors.affiliation: Metallurgy and Materials Science Research Institute, Chulalongkorn University, Bangkok 10330, Thailand.
authors.forename: Jiaqian
authors.initials: J
authors.lastname: Qin
authors.affiliation: Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287, United States.
authors.forename: Kurt
authors.initials: K
authors.lastname: Leinenweber
authors.affiliation: Department of Fundamental Courses, Qinghai University, Xining 810016, People's Republic of China.
authors.forename: Haihua
authors.initials: H
authors.lastname: Chen
authors.affiliation: Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, People's Republic of China.
authors.forename: Duanwei
authors.initials: D
authors.lastname: He
authors.affiliation: High Pressure Science and Engineering Center, University of Nevada, Las Vegas, Las Vegas, Nevada 89154, United States.
authors.forename: Yusheng
authors.initials: Y
authors.lastname: Zhao