Diamagnetic coupling for magnetic tuning in nano-thin films

Vopson, M.M, Belusky, M and Lepadatu, Serban orcid iconORCID: 0000-0001-6221-9727 (2020) Diamagnetic coupling for magnetic tuning in nano-thin films. Applied Physics Letters, 116 (25). ISSN 0003-6951

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Official URL: https://doi.org/10.1063/5.0008482


Combining nanoscale thin films of magnetic and non-magnetic phases in various hetero-structures has generated a rich variety of new magnetic and magneto-transport phenomena and applications. Here, we propose a coupling between ferromagnetic and diamagnetic layers. We used this diamagnetic coupling to improve the exchange bias field of a diamagnet/ferromagnet/anti-ferromagnet hetero-structure by up to 212%, as evidenced in the experiments presented here. Since diamagnets have very special properties, including temperature independent negative magnetic susceptibilities, this coupling could be a powerful tool in future synthesis of solid state nanostructures such as exchange bias systems, spintronic devices, magnetic random access memories, sensors, and multiferroics.

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