Phase diagram of iron: Implications for the state of the Earth's core

Recently, new experimental data have been published on the compressibility and phase diagram of iron based on static and dynamic measurements at press ures and temperatures of the outer and inner core. Some of these data are i nconsistent with one another and with previous results. Accordingly, these data provide diverging numerical estimates of thermodynamic and geophysical parameters characterizing the state of the Earth's core. This paper presen ts results of revision and improvement of data on the phase diagram of iron based on experiments with shock compression and isentropic expansion corre sponding to melting at the normal pressure.