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Magnetic fullerenes inside single-wall carbon nanotubes

F. Simon·H. Kuzmany·B. Nafradi·T. Feher·L. Forro·F. Fulop·A. Janossy·L. Korecz·A. Rockenbauer·F. Hauke·A. Hirsch
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Abstract

C59N magnetic fullerenes were formed inside single-wall carbon nanotubes by vacuum annealing functionalized C59N molecules encapsulated inside the tubes. A hindered, anisotropic rotation of C59N was deduced from the temperature dependence of the electron spin resonance spectra near room temperature. Shortening of spin-lattice relaxation time, T_1, of C59N indicates a reversible charge transfer toward the host nanotubes above $\sim 350$ K. Bound C59N-C60 heterodimers are formed at lower temperatures when C60 is co-encapsulated with the functionalized C59N. In the 10-300 K range, T_1 of the heterodimer shows a relaxation dominated by the conduction electrons on the nanotubes.

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F. Simon, H. Kuzmany, B. Nafradi, T. Feher, L. Forro, F. Fulop, A. Janossy, L. Korecz, A. Rockenbauer, F. Hauke, A. Hirsch. 2006-06-23. Magnetic fullerenes inside single-wall carbon nanotubes. https://doi.org/10.1103/physrevlett.97.136801

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