Equation of state for iridium at high pressures

Khishchenko, Konstantin V.

doi:10.1088/1742-6596/2154/1/012009

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Equation Of State Parameters1

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2023

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Cited by 2 publications

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“…[10]. Room temperature isotherm of Khishchenko shock experiments [34] agrees very well against our FPMD results. C V , α, and γ.…”

Section: Equation Of State Parameterssupporting

confidence: 82%

First-principles thermal equation of state of fcc iridium

Luo

Cohen

2023

Phys. Rev. B

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The thermal equation of states for fcc iridium (Ir) is obtained from first-principles molecular dynamics up to 3000 K and 540 GPa. The equation of state (EoS) is globally fitted to a simplified free energy model and various parameters are derived. The theoretical principal Hugoniot is compared with shockwave experiments, where discrepancy suggests formation of new Ir phases. A few representative EoS parameters, such as bulk modulus KT , thermal expansivity α, Grüneisen parameter γ, and constant pressure capacity CP , Debye temperature, ΘD are computed to compare with experimental data.

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“…[10]. Room temperature isotherm of Khishchenko shock experiments [34] agrees very well against our FPMD results. C V , α, and γ.…”

Section: Equation Of State Parameterssupporting

confidence: 82%