Transport properties of liquid iron up to 6 Gpa

The electronic thermal conductivity λe(T, p) is determined by application of the Wiedemann-Frans relation with the Lorens function L(T) as obtained at 1 atmosphere, to electrical conductivity data obtained from two sets of high p, T measurements through the polymorphic phases into the liquid atate of pure Iron. Values of Δλe(T, p)/Δp in the liquid state vary between 42. 6 and 52. 4[mW cm−1 K−1 GPa−1].Contributions to variations of the Lorens number L(T, p) are discussed in terms of the density of levels Nd(C) and the changes of the Fermi energy ϵ with p, T as obtained from data on the thermoelectric power S(T, p) variations combined with the electrical conductivlty u(T, p) variations, both determined from high presaure experimental values for did and liquid iron.