THEORETICAL STUDY OF THE CURVE
OF THE MELTING POINT OF IRON WITH ALLOWANCE
FOR IONIZATION BY PRESSURE

F. N. Borovik and G. S. Romanov

UDC 536.652, 539.89

A curve of the melting point of iron up to 200 GPa 
is constructed on the basis of the Lindemann criterion. The transverse 
velocity of sound, needed for determining the Debye temperature, is 
calculated with allowance for ionization by pressure. The compression 
dependence of the concentration of free electrons is ascertained via 
the band structure of the metal obtained for various compression ratios 
by solving the Hartree-Fock-Slater equations of a self-consistent 
field in the Wigner-Seitz approximation of spherical cells. The 
calculated curve is compared with the experimental melting-point curve.

JEPTER7492019998
JEPTER749208