Perpendicular magnetic anisotropy in Co${}_2$Fe${}_{0.4}$Mn${}_{0.6}$Si

Abstract

We report perpendicular magnetic anisotropy (PMA) in the half-metallic ferromagnetic Heusler alloy Co${}_2$Fe${}_{0.4}$Mn${}_{0.6}$Si (CFMS) in a MgO/CFMS/Pd trilayer stack. PMA is found for CFMS thicknesses between 1 and 2 nm, with a magnetic anisotropy energy density of $K_U=1.5\times 10^6$ erg/cm${}^3$ for t${}_{\text{CFMS}}=1.5$ nm. Both the MgO and Pd layer are necessary to induce the PMA. We measure a tunable anomalous Hall effect, where its sign and magnitude vary with both the CFMS and Pd thickness.

References in corpus (4)

• Half-metallic ferromagnets: From band structure to many-body effects
• Correlation in the transition metal based Heusler compounds Co${}_2$MnSi and Co${}_2$FeSi
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Cited by in corpus (2)

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