Valent state of cerium in Fe, Ce-melts

The results of the investigation of specific electrical resistance (rho) of Fe, Ce - melts are presented. It has been found that concentration dependences rho(x) have an extremum character with maximum in case of iron content of about 30 at.%. With the purpose of elucidating regularities of cerium valence change depending on alloys composition model calculations rho(x) are performed. The conclusion is drawn on the basis of the best agreement between theoretical and experimental values of specific electrical resistance that at iron concentration in alloys over 30 at.% practically total metallization of 4f-cerium electrons takes place