Relaxation effects in Fe17 and Fe19 oxo-bridged iron clusters |
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| Authors: | L. Cianchi F. Gulisano G. Spina |
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| Affiliation: | (1) Dipartimento di Fisica, Università di Firenze, Florence, Italy;(2) Present address: IROE, Consiglio Nazionale delle Ricerche, Florence, Italy |
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| Abstract: | The magnetic properties of a new type of iron clusters are studied by means of Mössbauer spectroscopy in an applied magnetic field. The results obtained agree with the ones obtained from magnetic susceptibility measurements. They are well explained in terms of relaxation determined by fluctuations in the hyperfine field due to spin-spin interaction. The triangular arrangement of the iron ions plays an essential role in this mechanism giving rise to spin frustration effects. |
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