X-ray ferromagnetic resonance spectroscopy[EPFL]

mt7344

We 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
& T8 R+ ~1 g) r8 \& x1 v. v& Emonochromatic 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
0 d" {- I  ?8 ^# U" U, B2 t9 s0 ?energy corresponding to the maximum of the magnetic circular dichroism effect at the iron L2,3
/ ~; a% N3 v' ]7 A4 sedges 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.


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權限10 & RDB=0, 3 Pages paper!!

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[ 本帖最後由 mt7344 於 2007-6-9 07:00 PM 編輯 ]

engineer

X-ray?  Wow, looks like a high-end application, right?