FIG. 2.

Magnetization of YIG/Co(50) (solid), YIG/Cu(5)/Co(50) (dash-dotted) and YIG/AlOx(1.5)/Co(50) (dashed) normalized to the magnetization at μ₀H = 4 mT. The magnetic hysteresis loops of YIG/Co show an enhancement of the Co coercive field as well as a rather smooth switching. The samples with a Cu or AlOx interlayer reveal a sharp switching of the magnetization at the Co coercive field μ₀H_c ≈ 1 mT. The inset shows a possible static magnetization distribution in an exchange coupled (left) and an uncoupled (right) heterostructure at an external magnetic field of μ₀H = 2 mT. In the latter case, both static magnetizations are independently aligned parallel to the external field direction, as the external field amplitude exceeds the coercive fields of YIG and Co.