Figure 5

The PMA strength effect on the magnetic properties.

Dependences of H_c⊥, H_ex and magnetic anisotropy energy K_p of the FM layer on (a) the repetition number N for the samples of [Co0.28/Ni0.58]_N/ Tb₃₀Co₇₀ (12) and (b) the interlayer Co thickness t_Co for the samples of [Co0.28/Ni0.58]₅/Co(t_Co)/Tb₃₀Co₇₀ (12).