Low damping magnetic properties and perpendicular magnetic anisotropy in the Heusler alloy Fe1.5CoGe | Zendy

A. Conca | Zendy; Alessia Niesen | Zendy; Günter Reiss | Zendy; B. Hillebrands | Zendy

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Low damping magnetic properties and perpendicular magnetic anisotropy in the Heusler alloy Fe1.5CoGe

Author(s) -

A. Conca,

Alessia Niesen,

Günter Reiss,

B. Hillebrands

Publication year - 2019

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.5104313

Subject(s) - materials science , condensed matter physics , alloy , annealing (glass) , anisotropy , perpendicular , magnetic anisotropy , epitaxy , tin , magnetic damping , magnetic shape memory alloy , magnetic field , metallurgy , magnetization , composite material , physics , optics , layer (electronics) , geometry , mathematics , vibration , quantum mechanics

We present a study of the dynamic magnetic properties of TiN-buffered epitaxial thin films of the Heusler alloy Fe1.5CoGe. Thickness series annealed at different temperatures are prepared and the magnetic damping is measured, a lowest value of α = 2.18 × 10−3 is obtained. The perpendicular magnetic anisotropy properties in Fe1.5CoGe/MgO are also characterized. The evolution of the interfacial perpendicular anisotropy constant KS⊥ with the annealing temperature is shown and compared with the widely used CoFeB/MgO interface. A large volume contribution to the perpendicular anisotropy of (4.3 ± 0.5) × 105 J/m3 is also found, in contrast with vanishing bulk contribution in common Co- and Fe-based Heusler alloys.We present a study of the dynamic magnetic properties of TiN-buffered epitaxial thin films of the Heusler alloy Fe1.5CoGe. Thickness series annealed at different temperatures are prepared and the magnetic damping is measured, a lowest value of α = 2.18 × 10−3 is obtained. The perpendicular magnetic anisotropy properties in Fe1.5CoGe/MgO are also characterized. The evolution of the interfacial perpendicular anisotropy constant KS⊥ with the annealing temperature is shown and compared with the widely used CoFeB/MgO interface. A large volume contribution to the perpendicular anisotropy of (4.3 ± 0.5) × 105 J/m3 is also found, in contrast with vanishing bulk contribution in common Co- and Fe-based Heusler alloys.

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