Ga. Bertero et R. Sinclair, (PT CO/PT)/X MULTILAYER FILMS WITH HIGH KERR ROTATIONS AND LARGE PERPENDICULAR MAGNETIC ANISOTROPIES/, Applied physics letters, 64(24), 1994, pp. 3337-3339
We have sputter-deposited a series of (Pt/Co/Pt)/X multilayer structur
es with X=Pd,Ag,Cu displaying large Kerr rotations with improved perpe
ndicular anisotropy and magnetic coercivity compared to the correspond
ing Co/X multilayers. In particular, Ar-sputtered (Pt/Co/Pt)/Pd multil
ayers, with the Pt layer thicknesses corresponding to one atomic monol
ayer, present Kerr rotations of the order of 0.26-degrees, perpendicul
ar anisotropy energies of 33 x 10(6) ergs/cc (Co) or better, and magne
tic coercivities as high as 8 kOe.