We have studied the effect of Sm on the magnetic surface anisotropy (MSA) of Pd/Co100-xSmx/Pd (111) trilayers, where Sm content x was varied from 0 to 11. All samples show perpendicular anisotropy due to the strong MSA at the interfaces. The MSA significantly increases with x and attains a maximum value of 0.60 erg/cm2 at x ≃ 8.3, which is 36% larger than that of pure Co (x = 0). The volume term of the magnetic anisotropy shows a similar behavior as the MSA. The appreciable increase in MSA is considered to be due to the enhancement of orbital moment of Co by the addition of Sm.
ASJC Scopus subject areas
- Physics and Astronomy(all)