Dresden 2014 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 55: Poster II
MA 55.58: Poster
Freitag, 4. April 2014, 10:30–13:30, P2
Study of material parameters of YIG films with ferromagnetic resonance techniques — •Stefan Klingler1, Andrés Conca1, Andrii Chumak1, Burkard Hillebrands1, Behrouz Khodadadi2, and Tim Mewes2 — 1FB Physik und Landesforschungszentrum OPTIMAS, TU Kaiserslautern, 67663 Kaiserslautern, Germany — 2Center for Materials for Information Technology, University of Alabama, Al, USA
The developement of spintronics is aiming to a replacement of the electron charge as information carrier. In this emerging field the electron spin is used as information carrier which can be manipulated without current and therefore without the limitations due to heating. In this context the material parameters of YIG are of crucial importance for the application in magnonics and spintronics.
Here, we present measurements of the saturation magnetization Ms and the exchange constant A of liquid phase expitaxy (LPE) grown YIG films. The films were grown on (111) Gadolinium Gallium Garnet (GGG) substrates with a thickness of 0.91, 1.6 and 2.6 µm and a size of 3 × 3 mm. The YIG samples were investigated with a waveguide ferromagnetic resonance (FMR) setup in a frequency range from 5 to 40 GHz in in-plane and out-of-plane configuration. A and Ms were determined using the first perpendicular standing spin wave modes (PSSW) and the method of Schreiber and Frait [1]. The results for both configurations are compared and thereby an angular dependence was detected.
[1] Phys. Rev. B, 54, 6473 (1996)