We have carried out 1H nuclear magnetic resonance in a one‐dimensional ferrimagnet Mn(hfac)2NITiPr formed by Mn2+ (s = 5/2) ions and nitonyl nitroxide radicals (s = 1/2) to investigate the spin dynamics in the system. From the temperature dependence of the NMR spectrum it is revealed that, with decreasing temperature, spin correlations between the Mn2+ and radical spins develop, and that the direction of each spin moment becomes frozen on the time scale of the NMR frequency below 15 K. The dependence of the nuclear relaxation rate (1/T1) on both temperature and magnetic field is also reported. © 2006 American Institute of Physics
Spin Dynamics of the One Dimensional Ferrimagnet Mn(hfac)2NITiPr Studied by 1H‐NMR / Y. Nishisaka; Y. Furukawa; K. Kumagai; A. Lascialfari; A. Caneschi. - STAMPA. - 850:(2005), pp. 1047-1048. (Intervento presentato al convegno 24th International Conference on Low Temperature Physics - LT24 tenutosi a Orlando nel 10-17 August 2005).
Spin Dynamics of the One Dimensional Ferrimagnet Mn(hfac)2NITiPr Studied by 1H‐NMR
CANESCHI, ANDREA
2005
Abstract
We have carried out 1H nuclear magnetic resonance in a one‐dimensional ferrimagnet Mn(hfac)2NITiPr formed by Mn2+ (s = 5/2) ions and nitonyl nitroxide radicals (s = 1/2) to investigate the spin dynamics in the system. From the temperature dependence of the NMR spectrum it is revealed that, with decreasing temperature, spin correlations between the Mn2+ and radical spins develop, and that the direction of each spin moment becomes frozen on the time scale of the NMR frequency below 15 K. The dependence of the nuclear relaxation rate (1/T1) on both temperature and magnetic field is also reported. © 2006 American Institute of Physics
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