Novel behaviors of coercivity in GdFeCo/Hf/MgO heterostructure
نویسندگان
چکیده
It is commonly known that the coercivity (H c ) of rare-earth/transition-metal (RE–TM) compound tuned based on varying RE content as compared to TM component. The drawback this approach H changes are permanent. In work, we investigate behaviors GdFeCo/Hf/MgO heterostructure where heavy metal Hf layer inserted in middle not only convert charge current into spin but also prevent oxygen diffusion effect. A strong geometry dependence detected Hall bar devices attributed intrinsic properties GdFeCo and elucidates oxidation issue from MgO prevented. By selecting a proper Gd content, demonstrate can be altered flexibly wide range [Formula: see text] via electric current. We develop simple model simulate roles Joule heating spin–orbit torques novel coercivity. verified excellent magnetic characteristics still preserved while manipulating by Our findings broaden new RE–TM alloys, making them attractive for tunable anisotropy.
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ژورنال
عنوان ژورنال: AIP Advances
سال: 2022
ISSN: ['2158-3226']
DOI: https://doi.org/10.1063/5.0086629