Neutron spectroscopy and magnetic relaxation of the Mn-6 nanomagnets

S. Carretta, T. Guidi, P. Santini, G. Amoretti, O. Pieper, B. Lake, J. van Slageren, F. El Hallak, W. Wernsdorfer, H. Mutka, M. Russina, C. J. Milios, E. K. Brechin

Research output: Contribution to journalArticlepeer-review

Abstract

Inelastic neutron scattering has been used to determine the microscopic Hamiltonian describing two high-spin variants of the high-anisotropy Mn-6 nanomagnet. The energy spectrum of both systems is characterized by the presence of several excited total-spin multiplets partially overlapping the S = 12 ground multiplet. This implies that the relaxation processes of these molecules are different from those occurring in prototype giant-spin nanomagnets. In particular, we show that both the height of the energy barrier and resonant tunnelling processes are greatly influenced by low-lying excited total-spin multiplets. (C) 2008 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)1940-1944
Number of pages5
JournalPolyhedron
Volume28
Issue number9-10
DOIs
Publication statusPublished - 22 Jun 2009

Keywords

  • Molecular magnets
  • Neutron inelastic scattering
  • Dynamic properties
  • Magnetization reversal mechanisms
  • SINGLE-MOLECULE MAGNET
  • ANISOTROPY

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