F-19 nuclear spin relaxation and spin diffusion effects in the single-ion magnet LiYF4:Ho3+ (Articolo in rivista)

Type
Label
  • F-19 nuclear spin relaxation and spin diffusion effects in the single-ion magnet LiYF4:Ho3+ (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Alternative label
  • Malkin, BZ; Vanyunin, MV; Graf, MJ; Lago, J; Borsa, F; Lascialfari, A; Tkachuk, AM; Barbara, B (2008)
    F-19 nuclear spin relaxation and spin diffusion effects in the single-ion magnet LiYF4:Ho3+
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Malkin, BZ; Vanyunin, MV; Graf, MJ; Lago, J; Borsa, F; Lascialfari, A; Tkachuk, AM; Barbara, B (literal)
Pagina inizio
  • 155 (literal)
Pagina fine
  • 163 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 66 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • \"[Malkin, B. Z.; Vanyunin, M. V.] Kazan VI Lenin State Univ, Dept Phys, Kazan 420008, Russia; [Graf, M. J.] Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA; [Graf, M. J.; Lago, J.; Borsa, F.; Lascialfari, A.] CNR, INFM Unit, Dept Phys A Volta, I-27100 Pavia, Italy; [Graf, M. J.; Lago, J.; Borsa, F.; Lascialfari, A.] CNISM Unit, I-27100 Pavia, Italy; [Graf, M. J.; Lago, J.; Borsa, F.; Lascialfari, A.] S3 CNR INFM, Modena, Italy; [Lascialfari, A.] Univ Milan, Inst Gen Physiol & Biol Chem, I-20134 Milan, Italy; [Tkachuk, A. M.] St Petersburg State Univ Informat Technol Mech &, St Petersburg 199034, Russia; [Barbara, B.] CNRS, Inst Neel, Dept Nanosci, F-38042 Grenoble 09, France (literal)
Titolo
  • F-19 nuclear spin relaxation and spin diffusion effects in the single-ion magnet LiYF4:Ho3+ (literal)
Abstract
  • Temperature and magnetic field dependences of the F-19 nuclear spin-lattice relaxation in a single crystal of LiYF4 doped with holmium are described by an approach based on a detailed consideration of the magnetic dipole-dipole interactions between nuclei and impurity paramagnetic ions and nuclear spin diffusion processes. The observed non-exponential long time recovery of the nuclear magnetization after saturation at intermediate temperatures is in agreement with predictions of the spin-diffusion theory in a case of the diffusion limited relaxation. At avoided level crossings in the spectrum of electron-nuclear states of Ho3+ ions, rates of nuclear spin-lattice relaxation increase due to quasi-resonant energy exchange between nuclei and paramagnetic ions in contrast to the predominant role played by electronic cross-relaxation processes in the low-frequency ac-susceptibility. (literal)
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