Flexible spintronic devices on Kapton

Amilcar Bedoya-Pinto, Marco Donolato, Marco Gobbi, Luis E. Hueso, Paolo Vavassori

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    Abstract

    Magnetic tunnel junctions and nano-sized domain-wall conduits have been fabricated on the flexible substrate Kapton. Despite the delicate nature of tunneling barriers and zig-zag shaped nanowires, the devices show an outstanding integrity and robustness upon mechanical bending. High values of bending angle (r = 5 mm) have been achieved without degradation of the device performance, reaching room-temperature tunneling magnetoresistance ratios of 12% in bended Co/Al2O3/NiFe junctions. In addition, a suitable route to pattern high-quality nanostructures directly on the polyimide surface is established. These results demonstrate that Kapton is a promising platform for low-cost, flexible spintronic applications involving tunnel junction elements and nanostructurization. 

    Original languageEnglish
    JournalApplied Physics Letters
    Volume104
    Issue number6
    Pages (from-to)062412
    ISSN0003-6951
    DOIs
    Publication statusPublished - 2014

    Bibliographical note

    © 2014 AIP Publishing LLC.

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