Perpendicular magnetic anisotropy in Co2Fe0.4Mn0.6Si

Perpendicular magnetic anisotropy in Co2Fe0.4Mn0.6Si

We report perpendicular magnetic anisotropy (PMA) in the half-metallic ferromagnetic Heusler alloy Co2Fe0.4Mn0.6Si (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 × 10 6  erg/cm3 for t CFMS = 1.5  nm...

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Veröffentlicht in:Journal of applied physics 2016-07, Vol.120 (1)
Hauptverfasser: Ludbrook, B. M., Ruck, B. J., Granville, S.
Format: Artikel
Sprache:eng
Schlagworte:
Applied physics
Ferromagnetism
Flux density
Hall effect
Heusler alloys
Magnesium oxide
Magnetic anisotropy
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Zusammenfassung:We report perpendicular magnetic anisotropy (PMA) in the half-metallic ferromagnetic Heusler alloy Co2Fe0.4Mn0.6Si (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 × 10 6  erg/cm3 for t 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.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4957445