Temperature dependence of the spin dynamics in the strongly frustrated antiferromagnet SrCr9xGa12-9xO19 (Articolo in rivista)

Type
Label
  • Temperature dependence of the spin dynamics in the strongly frustrated antiferromagnet SrCr9xGa12-9xO19 (Articolo in rivista) (literal)
Anno
  • 2000-01-01T00:00:00+01:00 (literal)
Alternative label
  • C.Mondelli, H.Mutka , C.Payen, B.Frick. and K.Andersen (2000)
    Temperature dependence of the spin dynamics in the strongly frustrated antiferromagnet SrCr9xGa12-9xO19
    in Physica. B, Condensed matter (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • C.Mondelli, H.Mutka , C.Payen, B.Frick. and K.Andersen (literal)
Pagina inizio
  • 1371 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 284-288 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Institut Laue-Langevin, B.P. 156, F-38042 Grenoble Cedex 9, France Institut des Materiaux, Laboratoire de Chimie des Solides, B.P. 32229, F-44322 Nantes Cedex 3, Franc (literal)
Titolo
  • Temperature dependence of the spin dynamics in the strongly frustrated antiferromagnet SrCr9xGa12-9xO19 (literal)
Abstract
  • We have used neutron scattering, with and without polarization analysis, to examine the magnetic #uctuations of SrCr9xGa12~9xO19 in a wide dynamic range from 0.001 to 10 meV at temperatures from 0.1 to 300 K. Below the macroscopic freezing temperature (+4 K), an elastic response with a broadly peaked Q-dependence prevails, and the dynamic response is only weakly temperature dependent. Above the freezing temperature the response becomes quasi-elastic and obeys, for +u(5 meV, a scaling behaviour suggesting a disorder dominated critical regime quite di!erent from that of a standard paramagnet. (literal)
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