Magnetic behavior of pure endohedral metallofullerene Ho{at}C{sub 82}: A comparison with Gd{at}C{sub 82}
- Hong Kong Univ. of Science and Technology, Kowloon (Hong Kong)
Magnetic properties of Ho{at}C{sub 82} and Gd{at}C{sub 82} were characterized in the temperature range of 1.8--100 K with an applied magnetic field up to 5T. The isothermal magnetization curves of Gd{at}C{sub 82} and Ho{at}C{sub 82} follow the Brillouin function down to 8 and 12 K, respectively. Unlike Gd{at}C{sub 82}, the fitting to the Curie-Wiess law for Ho{at}C{sub 82} results in an effective magnetic moment which is significantly smaller than that of a free Ho{sup 3+} ion. The magnetic moment reduction and the imperfect paramagnetic behavior of Ho{at}C{sub 82} are ascribed to the carbon cage crystal field effect, the partial hybridization of the orbitals of the entrapped Ho atom and the carbon cage, and the interactions between the metal centers.
- OSTI ID:
- 682086
- Journal Information:
- Journal of Physical Chemistry B: Materials, Surfaces, Interfaces, amp Biophysical, Journal Name: Journal of Physical Chemistry B: Materials, Surfaces, Interfaces, amp Biophysical Journal Issue: 29 Vol. 103; ISSN 1089-5647; ISSN JPCBFK
- Country of Publication:
- United States
- Language:
- English
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