Nuclear magnetic ordering in silver at positive and negative spin temperatures

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Recent experimental results on antiferromagnetic and ferromagnetic ordering in silver at nanokelvin temperatures are reviewed. The dominant interaction between nuclear spins is the Ruderman-Kittel exchange which leads to spontaneous antiferromagnetic ordering below the record-low Néel temperatureTn= 560 pK. AboveTc=—1.9 nK, ferromagnetic order has beenfound, which is a consequence of the fact that the spin system tries tomaximize its Helmholtz free energy. The ferromagnetic ordering isobserved as a saturation of the susceptibility to — 1, which is caused by theformation of plate-shaped domains. Except for the re-entrant form of theantiferromagnetic phase diagram atT >0, the overall agreement betweenexperimental and theoretical results is good.

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut327-332
Sivumäärä6
JulkaisuPhysica Scripta
Vuosikerta1993
NumeroT49A
TilaJulkaistu - 1993
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

    Tutkimusalat

  • magnetic ordering, positive and negative spin, silver

ID: 4380353