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. 2016 Jun 13;7:ncomms11931. doi: 10.1038/ncomms11931

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(a) The magnetization along the easy axis for three different temperatures, showing the exchange coupling between the top and bottom layers. The middle layer thicknesses d_B is 10 nm. (b) The lower coercive field as a function of temperature (absolute and normalized by ), for three different middle layer thicknesses d_B. The dashed vertical line indicates the intrinsic transition temperature of Co₆₀AlZr₄₀. A coupling between the top and bottom layers is seen in a region well above the intrinsic transition temperature of the middle layer when d_B=10 nm (highlighted by the blue shaded area).

Inline graphic — (a) The magnetization along the easy axis for three different temperatures, showing the exchange coupling between the top and bottom layers. The middle layer thicknesses d_B is 10 nm. (b) The lower coercive field as a function of temperature (absolute and normalized by ), for three different middle layer thicknesses d_B. The dashed vertical line indicates the intrinsic transition temperature of Co₆₀AlZr₄₀. A coupling between the top and bottom layers is seen in a region well above the intrinsic transition temperature of the middle layer when d_B=10 nm (highlighted by the blue shaded area).