2008/01/31 by Michelle B. Weinberger, Sarah H. Tolbert, A. Kavner · 1 citation
Earth and Planetary Sciences · Materials Science · Engineering · #High-pressure geophysics and materials #Boron and Carbon Nanomaterials Research #Metal and Thin Film Mechanics
paper · doi:10.1103/physrevlett.100.045506
openalex publication_date 2008/01/31 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/11
Interest in osmium as an ultra-incompressible material and as an analog for the behavior of iron at high pressure has inspired recent studies of its mechanical properties. We have measured elastic and plastic deformation of Os metal at high pressures using in situ high pressure x-ray diffraction in the radial geometry. We show that Os has the highest yield strength observed for any pure metal, supporting up to 10 GPa at a pressure of 26 GPa. Furthermore, our data indicate changes in the nonhydrostatic apparent c/a ratio and clear lattice preferred orientation effects at pressures above 15 GPa.