Magnetic Properties of Heavy Rare-Earth Metallofullerenes M@C 82 (M = Gd, Tb, Dy, Ho, and Er)

Houjin Huang*, Shihe Yang, Xixiang Zhang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

65 Scopus citations

Abstract

We have conducted a comprehensive study on the magnetic properties of five heavy rare-earth metallofullerenes M@C 82 (M = Gd, Tb, Dy, Ho, Er) in the temperature range of 1.8 and 300 K at a magnetic field up to 5 T. The isothermal magnetization curves of the endohedral metallofullerenes follow the Brillouin function only above certain temperatures. The fittings to the Curie-Wiess law and to the Brillouin function for the heavy rare-earth metallofullerenes both result in effective magnetic moments that are significantly smaller than those of the corresponding free M 3+ ions. The magnetic moment reduction and the imperfect paramagnetic behavior of M@C 82 were found to be related to the orbital angular momentum of entrapped M 3+ ions. The fullerene cage crystal field splitting, the partial hybridization of the orbitals of the entrapped metal atom and the carbon cage, and the interactions between the metal centers were proposed to account for the peculiar magnetic behaviors of the endohedral metallofullerenes.

Original languageEnglish (US)
Pages (from-to)1473-1482
Number of pages10
JournalJournal of Physical Chemistry B
Volume104
Issue number7
StatePublished - Feb 24 2000

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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