Researchers from the University of Lorraine in France report that following a comprehensive characterization of multilayers of cobalt (Co) and nickel (Ni), the material holds great promise for memory applications based on spin transfer torque (STT-MRAM).

Multi layered cobalt and nickel films for spintronics

It was already shown before that Co/Ni multilayers have very good properties for spintronics applications, but up until now it wasn't clear if the films have a sufficiently large intrinsic spin polarization, which is necessary to create and maintain spin-polarized currents in spintronic devices. It was now shown that the films have a spin polarization of about 90% - which is similar to the best spintronic materials.

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