Determining spin-orbit torque in a single ferrimagnetic film without heavy metal via spin-torque ferromagnetic resonance

Determining spin-orbit torque in a single ferrimagnetic film without heavy metal via spin-torque ferromagnetic resonance

We report spin-orbit torque (SOT) in a single ferrimagnetic (FIM) GdFeCo alloy based on spin-torque ferromagnetic resonance (ST FMR). Thickness-dependent anomalous Hall resistance shows a bulk perpendicular magnetic anisotropy, which lead double peaks of ST FMR spectra at a larger thickness of 50 nm...

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Veröffentlicht in:Journal of physics. D, Applied physics Applied physics, 2022-07, Vol.55 (29), p.295001
Hauptverfasser: Wang, Junshuai, Li, Chaozhong, Liu, Fufu, Jiang, Changjun
Format: Artikel
Sprache:eng
Schlagworte:
oblique sputtering
single ferrimagnetic
spin-orbit torque
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Zusammenfassung:We report spin-orbit torque (SOT) in a single ferrimagnetic (FIM) GdFeCo alloy based on spin-torque ferromagnetic resonance (ST FMR). Thickness-dependent anomalous Hall resistance shows a bulk perpendicular magnetic anisotropy, which lead double peaks of ST FMR spectra at a larger thickness of 50 nm. Oblique-angle-dependent ST FMR is performed to study SOT, and the spin torque efficiency in the y axis is evaluated. This phenomenon is explained by the relationship between SOT and saturation magnetization. This finding provides an alternative method to modulate SOT in a single ferrimagnetic spintronic device.
ISSN:0022-3727
1361-6463
DOI:10.1088/1361-6463/ac6994