H-1-NMR study of the spin dynamics of fine superparamagnetic nanoparticles (Articolo in rivista)

Type
Label
  • H-1-NMR study of the spin dynamics of fine superparamagnetic nanoparticles (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.85.174426 (literal)
Alternative label
  • Bordonali, L; Furukawa, Y; Kraken, M; Litterst, FJ; Sangregorio, C; Casula, MF; Lascialfari, A (2012)
    H-1-NMR study of the spin dynamics of fine superparamagnetic nanoparticles
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Bordonali, L; Furukawa, Y; Kraken, M; Litterst, FJ; Sangregorio, C; Casula, MF; Lascialfari, A (literal)
Pagina inizio
  • ART. N. 174426 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 85 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 17 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [Bordonali, L] Univ Uniroma TRE, Dept Phys E Amaldi, Rome, Italy [Bordonali, L; Lascialfari, A] Univ Pavia, Dept Phys A Volta, I-27100 Pavia, Italy [Bordonali, L; Furukawa, Y] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA [Bordonali, L; Furukawa, Y] Iowa State Univ, Ames Lab, Ames, IA 50011 USA [Kraken, M; Litterst, FJ] Tech Univ Carolo Wilhelmina Braunschweig, Inst Condensed Matter Phys, D-38106 Braunschweig, Germany [Sangregorio, C] Univ Florence, INSTM, I-50019 Sesto Fiorentino, Italy [Sangregorio, C] Univ Florence, Dept Chem U Schiff, I-50019 Sesto Fiorentino, Italy [Casula, MF] Univ Cagliari, INSTM, Cagliari, Italy [Casula, MF] Univ Cagliari, Dept Chem Sci, Cagliari, Italy [Lascialfari, A] Univ Milan, Dept Mol Sci Appl Biosyst, I-20134 Milan, Italy [Lascialfari, A] S3 CNR, Inst Neurosci, I-41125 Modena, Italy (literal)
Titolo
  • H-1-NMR study of the spin dynamics of fine superparamagnetic nanoparticles (literal)
Abstract
  • We report a broadband H-1-NMRstudy of the temperature spin dynamics of nearly monodisperse dextran-coated gamma-Fe2O3 magnetic nanoparticles. We observed a maximum in T-1(-1) (T) that decreases in amplitude and shifts toward higher temperatures with increasing field. We suggest that this is related to the progressive superparamagnetic spin blocking of the ferrite core. The data can be explained by assuming a single electronic spin-spin correlation time and introducing a field-dependent distribution of anisotropy energy barriers. (literal)
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