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Magnetic Anisotropy of Cerium Endohedral Metallofullerene

Published online by Cambridge University Press:  15 March 2011

Masayasu Inakuma ,
Toshiaki Enoki ,
Haruhito Kato  and
Hisanori Shinohara
Masayasu Inakuma
Affiliation:
Department of Chemistry, Tokyo Institute of Technology, Tokyo, 152-8551, JAPAN
Toshiaki Enoki
Affiliation:
Department of Chemistry, Tokyo Institute of Technology, Tokyo, 152-8551, JAPAN
Haruhito Kato
Affiliation:
Department of Chemistry, Nagoya University, Nagoya, 464-8602, JAPAN
Hisanori Shinohara
Affiliation:
Department of Chemistry, Nagoya University, Nagoya, 464-8602, JAPAN
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Abstract

The magnetic properties of Ce@C82 have been studied. The magnetic anisotropy of Ce@C82 was analyzed taking account of the crystal field of the interior C82 cage acting on Ce3+ ion. Results showed that the reduction of the susceptibility at low temperature was caused due to the antiferromagnetic coupling between Ce3+ ion and C82 cage. The magnetization measurement at several temperatures also supported the antiferromagnetic interaction at low temperature. The magnetic susceptibility larger than the calculated one was measured at higher temperatures due to the magnetic interaction between the metallofullerenes and between the particles in the crystal. The magnetization of some frozen Ce@C82 solutions was found to depend on the applied field magnitude. The dependence suggested that the magnetic anisotropy of Ce ion induced a torque to restrict the rotational motion of Ce@C82 by the field.

Type
Article
Information
MRS Online Proceedings Library (OPL) , Volume 706: Symposium Z – Making Functional Materials with Nanotubes , 2001 , Z6.16.1
Copyright
Copyright © Materials Research Society 2002

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