High Entropy Alloy Thin Films as Efficient Spin-Orbit Torque Sources for Spintronic Memories.

ABSTRACT: High entropy alloys (HEAs) containing multiple elements are emerging as advanced materials with enhanced functionalities. However, their use for spintronic applications remains elusive. Here, it is demonstrated that iridium based HEAs, grown by magnetron sputtering at room temperature, can be used as spin Hall layers. These films display highly efficient conversion of charge current into spin current. They also allow for the epitaxial growth of magnetic multilayers with perpendicular magnetic anisotropy as well as synthetic antiferromagnets using a ternary RuAlGa antiferromagnetic coupling layer. It is demonstrated that iridium-based HEAs serve as effective sources of spin-orbit torque, as quantified by spin-torque ferromagnetic resonance and harmonic Hall measurements, enabling current-in

SUBMITTER: Wang P 

PROVIDER: S-EPMC12306383 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature