Time-domain measurement of driven ferromagnetic resonance

Details Time-domain measurement of driven ferromagnetic resonance Time-domain measurement of driven ferromagnetic resonance

2006-04-26

arxiv.org/abs/cond-mat/0604610v1

Physics

Condensed Matter

Materials Science

3 pages, 4 figures, submitted to APL, 2006

Scientific paper

We present a time-resolved measurement of magnetization dynamics during ferromagnetic resonance (FMR) in a single layer of Ni81Fe19. Small-angle (<1 deg.) precession of elemental Ni, Fe moments could be measured directly and quantitatively using time-resolved x-ray magnetic circular dichroism (XMCD) in transmission. The high temporal and rotational sensitivity of of this technique has allowed characterization of the phase and amplitude of driven FMR motion at 2.3 GHz, verifying basic expectations for a driven resonance.

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