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Multiple scattering approach to XMCD for Bi substituted Gd iron garnet

Ikuko Hojo1, Shin-ichi Nagamatsu1, Takashi Maruyama1, Hiroshi Maruyama2 and Takashi Fujikawa1

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We have studied Bi L-edge X-ray magnetic circular dichroism (XMCD) of Bi substituted Gd iron garnet (BiGd-IG) by using the relativistic multiple scattering calculations. BiGd-IG has giant magneto-optical response with substituted Bi. The XMCD analysis is suitable to understand the interesting behavior; it is important to understand the local magnetic and electronic structure around absorption atom Bi. Comparing the experimental spectra, we find that the proportion of magnetic atoms to nonmagnetic ones around Bi strongly influence the Bi XMCD spectra. We also investigate the effects of the spin polarization of the Bi 6p states.


PACS

78.20.Ls Magnetooptical effects

75.50.Gg Ferrimagnetics

78.70.Dm X-ray absorption spectra

71.20.Ps Other inorganic compounds

75.25.+z Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source x-ray scattering, etc.)

Subjects

Condensed matter: electrical, magnetic and optical

Dates

Issue 1 (2009)



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