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Title: Elastic, magnetic and electronic properties of iridium phosphide Ir2P

Journal Article · · Scientific Reports
DOI: https://doi.org/10.1038/srep21787 · OSTI ID:1240178
 [1];  [2];  [2];  [3];  [4];  [2];  [2];  [5];  [6];  [7];  [8];  [2]
  1. Sichuan Univ., Chengdu (People's Republic of China); Univ. of Nevada, Las Vegas, NV (United States)
  2. Univ. of Nevada, Las Vegas, NV (United States)
  3. Yanshan Univ., Qinhuangdao (People's Republic of China)
  4. Chinese Academy of Sciences, Beijing (People's Republic of China)
  5. Chulalongkorn Univ., Bangkok (Thailand)
  6. Arizona State Univ., Tempe, AZ (United States)
  7. Qinghai Univ., Xining (People's Republic of China)
  8. Sichuan Univ., Chengdu (People's Republic of China)

Cubic (space group: Fm3¯m) 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. Additionally, a spin glass behavior is indicated by magnetic susceptibility measurements.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC02-06CH11357; NA0001982
OSTI ID:
1240178
Journal Information:
Scientific Reports, Journal Name: Scientific Reports Journal Issue: 02 Vol. 6; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
ENGLISH

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Cited By (2)

The Structure and Properties of Magnesium-Phosphorus Compounds Under Pressure journal July 2018
A universal synthesis strategy for P-rich noble metal diphosphide-based electrocatalysts for the hydrogen evolution reaction journal January 2019

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