Thermal equation of state of rhodium characterized by XRD in a resistively heated diamond anvil cell.

ABSTRACT: The high-pressure and high-temperature structural, mechanical, and dinamical stability of rhodium has been investigated via synchrotron X-ray diffraction using a resistively heated diamond anvil cell and density functional theory. The isothermal compression data have been fitted with a Rydberg-Vinet equation of state (EoS) with best-fitting parameters V0 =55.046(16) Å 3 , K0 = 251(3) GPa, and K0' = 5.7(2). The thermal equation of state has been determined based upon the data collected following four different isotherms and has been fitted to a Holland and Powell thermal equation-of-state model with α0= 3.36(7)x10 -5 K -1 . The measured equation of state and structural parameters have been compared to the results of ab initio simulations. The agreement between theory and experiments is gene

SUBMITTER: Rodrigo-Ramon JL 

PROVIDER: S-EPMC11535440 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature