Cobalt K absorption edge shifts in some of its intermetallic compounds

Abstract

The K absorption discontinuity of cobalt has been studied in the pure metal and in six of its intermetallic compounds of the type RCo5, where R stands for a rare earth element. It is observed that the cobalt K discontinuity shifts towards the low-energy side (negative chemical shift) in all the compounds studied. The negative chemical shifts for cobalt are reported for the first time. The magnitudes of the shifts seem to depend upon the number of electrons taking part in bonding.