Local structures and magnetic properties of fullerene-Co systems studied by XAFS and XMCD analyses

Hojo, Ikuko*; Koide, Akihiro*; Matsumoto, Yoshihiro; Maruyama, Takashi*; Nagamatsu, Shinichi*; Entani, Shiro; Sakai, Seiji; Fujikawa, Takashi*

In this work we have measured Co K- and L $_{2,3}$ -edge X-ray absorption near edge structure (XANES) and Co L $_{2,3}$ -edge X-ray magnetic circular dichroism (XMCD) spectra, and also carried out their calculations for C $_{60}$ Co compounds. The observed XANES and XMCD are sensitive to the Co concentration. In the low density region (=1.0-1.5), one Co is surrounded by three C $_{60}$ balls. The Co L $_{2,3}$ -edge XMCD analyses gives the spin magnetic moment on Co in the range 0.5-0.9 .

Language	:	English
Journal	:	Journal of Electron Spectroscopy and Related Phenomena
Volume	:	185
Number	:	1-2
Pages	:	p.32 - 38
Publication Year/Month	:	2012/03
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Paper URL	:	https://doi.org/10.1016/j.elspec.2011.11.001
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Keywords	:	no keyword
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Registration No. : AA20110304
JAEA Abstracts No. : 40000455
Paper Submission No. : 10355

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