Effect of exchange coupling on magnetic property in Sm–Co/<italic>α</italic>-Fe layered system

Effect of exchange coupling on magnetic property in Sm–Co/α-Fe layered system

Sang C X^{1, 2}, Zhao G P^{1, 2, †,}, Xia W X^{2, ‡,}, Wan X L¹, Morvan F J¹, Zhang X C¹, Xie L H¹, Zhang J², Du J², Yan A R², Liu P^{2, 3}

2D evolution of the magnetization calculated by OOMMF for Sm–Co(10 nm)/α-Fe(6 nm) with exchange coupling A^hs = 1.8 × 10⁻⁶ erg/cm: (a) H = 0 kOe, magnetization saturation, (b) H = −7.0 kOe, near nucleation field, (c) H = −12.0 kOe, between the nucleation and coercive fields, (d) H = −15.0 kOe, the coercive field, (e) H = −16.0 kOe, the pinning point.