High Pressure Melting Curve of Fe Determined by Inter‐Metallic Fast Diffusion Technique

Abstract The heat extracted from the core by overlying mantle across core‐mantle boundary controls thermal evolution of core. This in turn leads to solidification inner association with exsolution light alloying elements into liquid outer Although temperature (T) at (ICB) would be adjusted account for effects elements, melting T Fe places an upper bound ICB and it is a vital point profile Here, we determine multi‐anvil press characterizing interface Fe‐W interaction. Our data place tighter constraint on curve between 8 21 GPa, that directly applicable small planetary bodies serves as anchor higher pressure.