X-ray ferromagnetic resonance spectroscopy[EPFL]

mt7344

We present a method to measure continuous-wave ferromagnetic resonance
FMR spectra based on
, L+ [0 c/ P3 d% e$ }4 M1 |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
* x, v. L% R# j- q. Bedges as a function of applied magnetic field. The x-ray FMR signal is shown to be energy
2 _$ v9 g% b/ S$ m5 F: B  pdependent, which makes the technique element sensitive and opens up new possibilities to perform
2 u, C4 @# Q7 [) W1 n9 P6 c  lelement-resolved FMR in magnetic alloys and multilayers.


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! Y( B  G0 l- c6 S: M9 Q

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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?