The heat capacity of a molecular Cr-8 ring was measured as a function of temperature and magnetic field in order to follow the evolution of the Schottky anomaly through the first (S = 0 to \1, - I >) level crossing occurring at B-c1 = 6.9 T. The results are interpreted within the framework of a spin Hamiltonian approach and they nicely fit the pattern of the energy levels derived by inelastic neutron spectroscopy. At B-c1, the Schottky anomaly almost vanishes suggesting that a true crossing occurs in Cr-8 in contrast to what was observed for ferric wheels.

Level crossing in a molecular Cr-8 ring / Affronte, Marco; Guidi, T; Caciuffo, R; Carretta, S; Amoretti, G; Hinderer, J; Sheikin, I; Smith, Aa; Winpenny, Rep; van Slageren, J; Gatteschi, D.. - In: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. - ISSN 0304-8853. - STAMPA. - 272:(2004), pp. 1050-1051. [10.1016/j.jmmm.2004.01.033]

Level crossing in a molecular Cr-8 ring

AFFRONTE, Marco;
2004

Abstract

The heat capacity of a molecular Cr-8 ring was measured as a function of temperature and magnetic field in order to follow the evolution of the Schottky anomaly through the first (S = 0 to \1, - I >) level crossing occurring at B-c1 = 6.9 T. The results are interpreted within the framework of a spin Hamiltonian approach and they nicely fit the pattern of the energy levels derived by inelastic neutron spectroscopy. At B-c1, the Schottky anomaly almost vanishes suggesting that a true crossing occurs in Cr-8 in contrast to what was observed for ferric wheels.
2004
272
1050
1051
Level crossing in a molecular Cr-8 ring / Affronte, Marco; Guidi, T; Caciuffo, R; Carretta, S; Amoretti, G; Hinderer, J; Sheikin, I; Smith, Aa; Winpenny, Rep; van Slageren, J; Gatteschi, D.. - In: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. - ISSN 0304-8853. - STAMPA. - 272:(2004), pp. 1050-1051. [10.1016/j.jmmm.2004.01.033]
Affronte, Marco; Guidi, T; Caciuffo, R; Carretta, S; Amoretti, G; Hinderer, J; Sheikin, I; Smith, Aa; Winpenny, Rep; van Slageren, J; Gatteschi, D.
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/4368
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 2
  • ???jsp.display-item.citation.isi??? 3
social impact