Nuclear magnetic ordering in silver at positive and negative spin temperatures

P. J. Hakonen*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)327-332
Number of pages6
JournalPhysica Scripta
Volume1993
Issue numberT49A
DOIs
Publication statusPublished - 1993
MoE publication typeA1 Journal article-refereed

Keywords

  • magnetic ordering
  • positive and negative spin
  • silver

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