Magnetic fullerenes inside single-wall carbon nanotubes.
C(59)N magnetic fullerenes were formed inside single-wall carbon nanotubes by vacuum annealing functionalized C(59)N molecules encapsulated inside the tubes. A hindered, anisotropic rotation of C(59)N was deduced from the temperature dependence of the electron spin resonance spectra near room temperature. Shortening of the spin-lattice relaxation time T(1) of C(59)N indicates a reversible charge transfer toward the host nanotubes above approximately 350 K. Bound C(59)N-C(60) heterodimers are formed at lower temperatures when C(60) is coencapsulated with the functionalized C(59)N. In the 10-300 K range, T(1) of the heterodimer shows a relaxation dominated by the conduction electrons on the nanotubes.
Simon
F
F
Institut für Materialphysik, Universität Wien, Strudlhofgasse 4, A-1090 Wien, Austria. ferenc.simon@univie.ac.at
Kuzmany
H
H
Náfrádi
B
B
Fehér
T
T
Forró
L
L
Fülöp
F
F
Jánossy
A
A
Korecz
L
L
Rockenbauer
A
A
Hauke
F
F
Hirsch
A
A