The low-temperature spin dynamics in molecular rings with a finite number (N less than or equal to 10) of magnetic ions was studied by means of H-1 NMR. When an external magnetic field (B) induces a crossing between energy levels, peaks are observed in the spin-lattice relaxation rate of protons, 1/T-1(B), at constant temperature. We discuss similarities and differences in the data from three different rings: Fe10, Fe6:Li and Cr8.
Spin Dynamics at Level Crossing in Molecular AF Rings Probed by NMR / A., Lascialfari; F., Borsa; M. H., Julien; E., Micotti; Y., Furukawa; Z. H., Jang; Cornia, Andrea; D., Gatteschi; M., Horvatic; J., VAN SLAGEREN. - In: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. - ISSN 0304-8853. - STAMPA. - 272-276(2004), pp. 1042-1047.
Spin Dynamics at Level Crossing in Molecular AF Rings Probed by NMR
CORNIA, Andrea;
2004
Abstract
The low-temperature spin dynamics in molecular rings with a finite number (N less than or equal to 10) of magnetic ions was studied by means of H-1 NMR. When an external magnetic field (B) induces a crossing between energy levels, peaks are observed in the spin-lattice relaxation rate of protons, 1/T-1(B), at constant temperature. We discuss similarities and differences in the data from three different rings: Fe10, Fe6:Li and Cr8.
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