Dresden 2017 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 66: Poster 3
MA 66.4: Poster
Freitag, 24. März 2017, 09:30–13:00, P2-OG2
Multifrequency ferromagnetic resonance study of the antiferromagnetic-ferromagnetic phase transition in FeRh — •Anna Semisalova1,2, Jonathan Ehrler1,3, Craig Barton4, Thomas Thomson4, Kilian Lenz1, Jürgen Fassbender1,3, Kay Potzger1, and Jürgen Lindner1 — 1HZDR, Institute of Ion Beam Physics and Materials Research, Dresden, Germany — 2Lomonosov MSU, Faculty of Physics, Moscow, Russia — 3Technische Universität Dresden, Dresden, Germany — 4University of Manchester, School of Computer Science, Manchester, UK
The first order phase transition of an equiatomic FeRh thin film from the antiferromagnetic (AFM) to the ferromagnetic (FM) state was studied using broadband ferromagnetic resonance (FMR). The films were deposited on MgO(001) substrates by means of magnetron sputtering of an alloy target. The position and linewidth of the FMR signal have been investigated in the frequency range up to 50 GHz. Conclusions on the temperature dependence of the magnetic damping are presented. The linewidth was found to be strongly affected by the exchange coupling due to reversible nucleation of AFM and FM domains in FeRh within the temperature range of the phase transformation.