TY - JOUR
T1 - Incident angle dependence of MCD at the Dy M5-edge of perpendicular magnetic DyxCo100-x films
AU - Agui, A.
AU - Mizumaki, M.
AU - Asahi, T.
AU - Sayama, J.
AU - Matsumoto, K.
AU - Morikawa, T.
AU - Matsushita, T.
AU - Osaka, T.
AU - Miura, Y.
N1 - Funding Information:
The authors are grateful to JASRI staff including Drs. H. Tanaka and M. Takao for their help to helicity switching the undulator ID23. BL23SU is supported by the JAERI soft X-ray staff, including Drs. A. Yoshigoe and T. Nakatani. This work is partly supported by the Sumitomo Foundation the 21 COE program “practical nano-chemistry” of MEXT, Japan.
PY - 2006/2/9
Y1 - 2006/2/9
N2 - X-ray absorption and magnetic circular dichroism spectra (XAS-MCD) of the Dy M4,5-edges of DyxCo100-x (x = 15-33) thin films are measured. The advantage of element and orbital selectivity in the XAS-MCD measurements enables us to directly observe the magnetic moments of specified elements. The MCD intensity at the Dy M5-edge is maximum when the incident X-ray is normal to the surface and the incident angle dependence of the MCD intensity shows a sine curve. That gives us information about the angular distribution of the Dy magnetic moments with respect to the total magnetization direction and the opening angle of the cone. Applying the sum rule, the expectation value of orbital magnetic moment was estimated. The half opening angle of the random distribution of the moments were estimated and it was found that the angle has its minimum value around x = 20.
AB - X-ray absorption and magnetic circular dichroism spectra (XAS-MCD) of the Dy M4,5-edges of DyxCo100-x (x = 15-33) thin films are measured. The advantage of element and orbital selectivity in the XAS-MCD measurements enables us to directly observe the magnetic moments of specified elements. The MCD intensity at the Dy M5-edge is maximum when the incident X-ray is normal to the surface and the incident angle dependence of the MCD intensity shows a sine curve. That gives us information about the angular distribution of the Dy magnetic moments with respect to the total magnetization direction and the opening angle of the cone. Applying the sum rule, the expectation value of orbital magnetic moment was estimated. The half opening angle of the random distribution of the moments were estimated and it was found that the angle has its minimum value around x = 20.
KW - DyCo
KW - Full-multiplet calculation
KW - Magnetic anisotropy
KW - Magnetic circular dichroism
KW - Magneto-optical recording
KW - Orbital moment
KW - Perpendicular magnetism
KW - Thin film
KW - X-ray absorption spectra
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U2 - 10.1016/j.jallcom.2004.11.077
DO - 10.1016/j.jallcom.2004.11.077
M3 - Conference article
AN - SCOPUS:31144444138
SN - 0925-8388
VL - 408-412
SP - 741
EP - 745
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
T2 - Proceedings of the Rare Earths'04 in Nara, Japan
Y2 - 7 November 2004 through 12 November 2004
ER -