Dresden 2014 – scientific programme
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MA: Fachverband Magnetismus
MA 38: Magnetic Materials II
MA 38.2: Talk
Thursday, April 3, 2014, 09:45–10:00, HSZ 403
Ferromagnetic resonance in FeRh thin films through the magnetic phase transition — •Alireza Heidarian1,2, Jürgen Lindner1, Rantej Bali1, and Kay Potzger1 — 1HZDR Institute of Ion-Beam Physics and Materials Research P.O. Box 510119, 01314 Dresden, Germany — 2TU Dresden Helmholtzstr. 10, 01069 Dresden, Germany
The temperature-induced antiferromagnetic (AF) to ferromagnetic (FM) phase transition of epitaxial FeRh/MgO (001) thin films is studies by means of ferromagnetic resonance (FMR). The FM as well as the AFM phase can be separated via temperature- and field dependent FMR. Our measurements show that temperature dependent FMR can be used to determine the relative volumes of AFM and FM regions across phase transition. Moreover, the temperature dependent magnetic coupling strength could be investigated. While decreasing the film thickness, the phase transition temperature shifts towards lower temperatures, which could result from the strain between substrate and the thin film.