Local spin dynamics in magnetic molecular chains studied by NMR and mu SR (Articolo in rivista)

Type
Label
  • Local spin dynamics in magnetic molecular chains studied by NMR and mu SR (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Alternative label
  • Mariani, M; Aldrovandi, S; Corti, M; Lago, J; Lascialfari, A; Micotti, E; Rettori, A; Cinti, F; Amato, A; Baines, C; Bogani, L; Caneschi, A; Cottrell, SP; Gatteschi, D (2007)
    Local spin dynamics in magnetic molecular chains studied by NMR and mu SR
    in Inorganica Chimica Acta (Testo stamp.)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Mariani, M; Aldrovandi, S; Corti, M; Lago, J; Lascialfari, A; Micotti, E; Rettori, A; Cinti, F; Amato, A; Baines, C; Bogani, L; Caneschi, A; Cottrell, SP; Gatteschi, D (literal)
Pagina inizio
  • 3903 (literal)
Pagina fine
  • 3908 (literal)
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  • 360 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Pavia, Dept Phys, I-27100 Pavia, Italy; Univ Pavia, CNR INFM, Pavia, Italy; INFM CNR Nat Res Ctr S3, I-41100 Modena, Italy; Univ Milan, Inst Gen Physiol & Biol Chem, I-20134 Milan, Italy; Univ Florence, Dept Phys, I-50019 Florence, Italy; Paul Scherrer Inst, CH-5232 Villigen, Switzerland; Univ Florence, INSTM RU Florence & Dept Chem, I-50019 Florence, Italy; CNR, IENI, Pavia, Italy; Rutherford Appleton Lab, ISIS, Didcot OX11 0QX, Oxon, England (literal)
Titolo
  • Local spin dynamics in magnetic molecular chains studied by NMR and mu SR (literal)
Abstract
  • We present NMR and mu+SR study of spin dynamics in one-dimensional and quasi-one-dimensional molecular magnets of recent synthesis. In particular, we focus on the so called Gd(hfaC)(3)NIT-R and CoPhOMe magnetic chains families. For Gd-R helimagnets we show some differences between 'weakly frustrated systems' and 'fully frustrated systems'. The different behaviour is due to the different radical inserted in the chains (R = Me, Ph for 'weakly frustrated systems' and R = iPr, Et for 'fully frustrated systems'). The existence of different phase transitions, particularly to 3D long-range magnetic order in Gd-Ph and to chiral order in Gd-iPr, is remarked together with a comparison between results obtained from macroscopic and microscopic investigating techniques. As regards CoPhOMe slowly relaxing chain, the 1 H NMR measurements confirm the freezing of the spins at low temperature, which prevents the 3D long-range order, and display the presence of two relaxation mechanisms related to distinct contributions to the local spin relaxation. (c) 2007 Elsevier B.V. All rights reserved. (literal)
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