Static and dynamical properties of Fe3+ (3d5; S = 5/2) spins in geometrically frustrated magnetic molecule Fe30 have been investigated by nuclear magnetic resonance (NMR) in the temperature range T = 0.1–300 K From a measurement of nuclear spin-lattice relaxation rates as a function of temperature, the fluctuation frequency of Fe3+ spins is found to decrease with decreasing temperature, indicating spin freezing at low temperatures.
Spin freezing in geometrically frustrated magnetic molecule Fe30 revealed by NMR / Y. Furukawa, E. Micotti, A. Lascialfari, F. Borsa, K.I. Kumagai, X. Fang, P. Kögerler. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - 400:Part 3(2012), pp. 032012.1-032012.4. (Intervento presentato al 26. convegno International conference on low temperature physics tenutosi a Beijing, China nel 2011) [10.1088/1742-6596/400/3/032012].
Spin freezing in geometrically frustrated magnetic molecule Fe30 revealed by NMR
A. Lascialfari;
2012
Abstract
Static and dynamical properties of Fe3+ (3d5; S = 5/2) spins in geometrically frustrated magnetic molecule Fe30 have been investigated by nuclear magnetic resonance (NMR) in the temperature range T = 0.1–300 K From a measurement of nuclear spin-lattice relaxation rates as a function of temperature, the fluctuation frequency of Fe3+ spins is found to decrease with decreasing temperature, indicating spin freezing at low temperatures.
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