Spin-enhanced magnetocaloric effect in molecular nanomagnets

M Evangelisti, A Candini, A Ghirri, M Affronte, E K Brechin, E J L McInnes

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Abstract

An unusually large magnetocaloric effect for the temperature region below 10 K is found for the Fe-14 molecular nanomagnet. This is to large extent caused by its extremely large spin S ground state combined with an excess of entropy arising from the presence of low-lying excited S states. We also show that the highly symmetric Fe-14 cluster core, resulting in small cluster magnetic anisotropy, enables the occurrence of long-range antiferromagnetic order below T-N=1.87 K. (C) 2005 American Institute of Physics.

Original languageEnglish
Article number072504
Pages (from-to)-
Number of pages3
JournalApplied Physics Letters
Volume87
Issue number7
DOIs
Publication statusPublished - 15 Aug 2005

Keywords

  • CLUSTERS
  • MAGNETS

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