Perpendicular magnetic anisotropy in Pd/Co thin film layered structures

Carcia, P. F.; Meinhaldt, A. D.; Suna, A.
July 1985
Applied Physics Letters;7/15/1985, Vol. 47 Issue 2, p178
Academic Journal
This letter presents the results of magnetic studies of thin film, periodic, Pd/Co layered structures with ultrathin cobalt (4-13 Å). We show that films with Co thicknesses less than 8 Å are easy to magnetize along a direction normal to the film surface. The best films have a saturation magnetization of about 500 emu/cm³ and a coercivity of 550 Oe, and thus they are candidates for a vertical magnetic recording medium. We attribute the perpendicular magnetic easy axis in these films to surface anisotropy at Pd/Co interfaces and strain in thin Co layers.


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