A single new diffraction line observed in two diamond-anvil-cell experiments above 200 GPa is assigned to bcc iron near melting, suggesting a bcc stability or kinetic pathway at core conditions.
Recentab initiosimulations augmented with machine learning have demonstrated the mechanical stability of the bcc structure of pure iron under Earth’s core conditions
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Observation of Body-Centered Cubic Iron above 200 Gigapascals
A single new diffraction line observed in two diamond-anvil-cell experiments above 200 GPa is assigned to bcc iron near melting, suggesting a bcc stability or kinetic pathway at core conditions.