Dresden 2009 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

MA: Fachverband Magnetismus

MA 32: Magnetic Thin Films III

MA 32.8: Vortrag

Donnerstag, 26. März 2009, 12:00–12:15, HSZ 403

Frequency-dependent Ferromagnetic Resonance (FMR) on thin ironfilms on semiconducting substrates — •Christian Schöppner, Florian M. Römer, Christoph Hassel, Ralf Meckenstock, Jürgen Lindner, and Michael Farle — Fachbereich Physik, AG Farle, CeNIDE, Universität Duisburg-Essen

Epitaxial iron films prepared within UHV environment (base pressure of 10⁻¹⁰ mbar) and capped with Ag/Pt were investigated by frequency dependent Ferromagnetic Resonance (FMR) in the range 6-26GHz. As substrates InAs(100) as well as GaAs(110) were used. In addition to the frequency dependent investigation full in-plane and out-of-plane angular dependent FMR measurements were conducted at a fixed frequency in order to determine the magnetic anisotropy fields. Provided that these fields are known, the frequency dependent results yield the possibility to quantify the g-factor of the system (being a measure of the orbital magnetism) with high accuracy. The results are discussed in terms of anisotropic orbital magnetic moments.