MAGNETIC CIRCULAR DICHROISM IN THE SOFT X-RAY ABSORPTION SPECTRA OF Co-BASED HEUSLER ALLOYS
2002 ◽
Vol 09
(02)
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pp. 955-960
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Keyword(s):
X Ray
◽
Magnetic circular dichroism (MCD) of core-level absorption spectra (XAS) in the soft X-ray region has been measured for the ferromagnetic Heusler alloys Co 2 TiSn , Co 2 ZrSn , and Co 2 NbSn . The Co 2p → 3d XAS–MCD spectra show an obvious contribution of the orbital angular momentum component to the magnetic moment in these alloys. The ratio between the orbital and the spin magnetic moments derived from the MCD spectra varies by more than a factor of 2 within these alloys. The mechanism of this variation is discussed in comparison with the band structure calculation.