Anomalous Hall and anomalous Nernst properties of thin MgO/Co2 Fe 0.4 Mn 0.6Si/Pd stacks with perpendicular magnetic anisotropy (PMA) revealed the presence of the magnetic proximity effect (MPE) in the… Click to show full abstract
Anomalous Hall and anomalous Nernst properties of thin MgO/Co2 Fe 0.4 Mn 0.6Si/Pd stacks with perpendicular magnetic anisotropy (PMA) revealed the presence of the magnetic proximity effect (MPE) in the Pd layer. The MPE is evidenced by nanometer range thickness-dependent transport measurements. A three-layer model that combines bulk and interface contributions accounts for our experimental data and provides quantitative estimates for the contributions to the total anomalous Nernst voltage of the ferromagnet Heusler [ + 0.97 μV/(K nm)] and the proximity-magnetized Pd layers [ − 0.17 μV/(K nm)]. The anomalous Nernst effect (ANE) reverses its sign by tuning the thickness of the Heusler layer, which is useful for designing ANE thermopiles.
               
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