Magnetization of La2-xSrxNiO4+delta (0 <= x <= 0.5): Spin-glass and memory effects (Articolo in rivista)

Type
Label
  • Magnetization of La2-xSrxNiO4+delta (0 <= x <= 0.5): Spin-glass and memory effects (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • Freeman, PG; Boothroyd, AT; Prabhakaran, D; Lorenzana, J (2006)
    Magnetization of La2-xSrxNiO4+delta (0 <= x <= 0.5): Spin-glass and memory effects
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Freeman, PG; Boothroyd, AT; Prabhakaran, D; Lorenzana, J (literal)
Pagina inizio
  • 014434 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 73 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Oxford, Dept Phys, Oxford OX1 3PU, England; Univ Roma La Sapienza, Dipartimento Fis, CNR, ISC,SMC,INFM, I-00185 Rome, Italy (literal)
Titolo
  • Magnetization of La2-xSrxNiO4+delta (0 <= x <= 0.5): Spin-glass and memory effects (literal)
Abstract
  • We have studied the magnetization of a series of spin-charge-ordered La2-xSrxNiO4+delta single crystals with 0 <= x <= 0.5. For fields applied parallel to the ab plane there is a large irreversibility below a temperature T(F1)similar to 50 K and a smaller irreversibility that persists up to near the charge-ordering temperature. We observed memory effects in the thermoremnant magnetization across the entire doping range. We found that these materials retain a memory of the temperature at which an external field was removed and that there is a pronounced increase in the thermoremnant magnetization when the system is warmed through a spin reorientation transition. (literal)
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