Nano-layer of Ruthenium Stabilizes Magnetic Sensors

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A thin layer of ruthenium (green in the cartoon) improves magnetic sensors by modulating interactions between a nickeliron film (blue) that responds to external magnetic fields and an iridiummanganese stabilizer film (pink). The ruthenium aligns its  ...
A thin layer of ruthenium (green in the cartoon) improves magnetic sensors by modulating interactions between a nickel/iron film (blue) that responds to external magnetic fields and an iridium/manganese stabilizer film (pink). The ruthenium aligns its electron spins, indicated by arrows, with the nearest layers in both films. Credit: NIST

A layer of ruthenium just a few atoms thick can be used to fine-tune the sensitivity and enhance the reliability of magnetic sensors, tests at the National Institute of Standards and Technology show.


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