Molecular nanoclusters as magnetic refrigerants: The case of Fe-14 with very large spin ground-state

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

Research output: Contribution to journalArticlepeer-review

Abstract

We report on the magnetic and thermal properties of the Fe-14 Molecular nanocluster. We find a huge magnetocaloric response in the temperature range below 10 K. This is to large extent caused by its very large spin ground-state combined with an excess of entropy arising from the admixture of low-lying excited S states. We also show that the high degree of symmetry of the Fe-14 cluster core, resulting in a very small cluster magnetic anisotropy, enables the Occurrence of long-range antiferromagnetic order below T-N = 1.87 K. (c) 2005 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)2573-2578
Number of pages6
JournalPolyhedron
Volume24
Issue number16-17
DOIs
Publication statusPublished - 17 Nov 2005

Keywords

  • molecular magnetic nanoclusters
  • magnetocaloric effect
  • magnetic order
  • specific beat
  • HEAT-CAPACITY
  • TEMPERATURE
  • ANISOTROPY
  • CLUSTERS

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