저널

The distribution of coercivity in the thickness direction were investigated by using Kerr hysteresis loop tracer for the Co-Cr films deposited by Facing Targets Sputtering apparatus. It was found that the difference between the coercivities of surface layer and initial growth layer H$_c$$ot$(S)-H$_c$$ot$(I) correlated strongly with $Delta$H$_o$, shich represents the degree of distribution of coercivity. Furthermore, the Cr content was varied in order to improve the coercivity of imitial growth layer H$_c$$ot$(I) and distribution of coercivity. H$_c$$ot$(I) took a maximum value of 750 Oe and the distribution of coercivity became sharper at the Cr content of 25at. %.