Diamagnetic coupling for magnetic tuning in nano-thin films

Melvin Vopson, Michal Belusky, Serban Lepadatu

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Abstract

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.
Original languageEnglish
Article number252402
Pages (from-to)1-4
Number of pages4
JournalApplied Physics Letters
Volume116
Issue number25
DOIs
Publication statusPublished - 23 Jun 2020

Keywords

  • exchange bias
  • diamagnetic coupling
  • nanoscale thin films
  • magnetic hetero-structures
  • spintronics

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