Boero, G.Rusponi, S.Bencok, P.Popovic, R. S.Brune, H.Gambardella, P.2009-04-142009-04-142009-04-14200510.1063/1.2089180https://infoscience.epfl.ch/handle/20.500.14299/37205WOS:000232442200045We present a method to measure continuous-wave ferromagnetic resonance (FMR) spectra based on the core-level absorption of circularly polarized x rays. The technique is demonstrated by using a monochromatic x-ray beam incident on an yttrium-iron-garnet sample excited by a microwave field at 2.47 GHz. FMR spectra are obtained by monitoring the x-ray absorption intensity at the photon energy corresponding to the maximum of the magnetic circular dichroism effect at the iron L2,3 edges as a function of applied magnetic field. The x-ray FMR signal is shown to be energy dependent, which makes the technique element sensitive and opens up new possibilities to perform element-resolved FMR in magnetic alloys and multilayers. © 2005 American Institute of Physics.Surface Electronic and Atomic StructureSpectroscopySpin-Polarized STMtext::journal::journal article::research article