Temperature dependent studies of coupled Fe55Pt45/Fe49Rh51 thin films

Rhys Griffiths, Jack Warren, Craig Barton, James Miles, Paul Nutter, Thomas Thomson

Research output: Contribution to journalArticlepeer-review


Equiatomic FeRh, with its highly unusual antiferromagnetic to ferromagnetic phase transition at 370K, provides an ability to create artificial multifunctional materials when combined with high anisotropy magnetic thin films in an exchange mediated structure. We investigate the temperature dependence of switching in L10 FePt/FeRh bilayer thin films, where the FeRh assists the switching of the FePt at modestly increased temperatures. A simple layered macrospin model is able to capture the switching characteristics of these films and shows good agreement with experimental results. Patterned L10 FePt/FeRh structures, measured using the anomalous Hall effect, show a similar temperature dependent switching behavior paving the way for reduced switching fields in future applications including heat-assisted bit patterned media recording and spintronic devices
Original languageEnglish
Article number054015
JournalPhysical Review Applied
Early online date7 Nov 2018
Publication statusPublished - 2018


  • FePt
  • FeRh
  • macrospin model
  • vibrating sample magnetometry
  • x-ray diffraction
  • anomalous Hall effect
  • heat assisted magnetic recording


Dive into the research topics of 'Temperature dependent studies of coupled Fe55Pt45/Fe49Rh51 thin films'. Together they form a unique fingerprint.

Cite this