http://www.cnr.it/ontology/cnr/individuo/prodotto/ID190662

Slow magnetic dynamics in the Ni-10 family of compounds (Articolo in rivista)

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Label

Slow magnetic dynamics in the Ni-10 family of compounds (Articolo in rivista) (literal)

Anno

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Alternative label

Carretta, S (1); Santini, P (1); Amoretti, G (1); Affronte, M (2,3); Candini, A (2,3); Ghirri, A (2,3); Tidmarsh, I.S. (4); Laye, R.H. (4); Shaw, R. (4); McInnes, E. J. L.(4) (2009)
Slow magnetic dynamics in the Ni-10 family of compounds
in Solid state sciences
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Carretta, S (1); Santini, P (1); Amoretti, G (1); Affronte, M (2,3); Candini, A (2,3); Ghirri, A (2,3); Tidmarsh, I.S. (4); Laye, R.H. (4); Shaw, R. (4); McInnes, E. J. L.(4) (literal)

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Rivista

Note

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1. Univ Parma, Dipartimento Fis, I-43100 Parma, Italy 2. Natl Res Ctr NanoStruct & Biosyst Surfaces S3, I-41100 Modena, Italy 3. Univ Modena & Reggio Emilia, Dipartimento Fis, I-41100 Modena, Italy 4. Univ Manchester, Dept Chem, Manchester M13 9PL, Lancs, England (literal)

Titolo

Abstract

We report on a family of molecular crystals containing non-interacting Ni-10 magnetic molecules. These crystals display slow relaxation of the magnetization below a temperature as high as 17 K. This behavior is not associated with an anisotropy energy barrier. The magnetic energy spectrum of a Ni-10 molecule is structured in dense well-separated bands, the lowest of which makes the crystal nearly opaque to phonons of energy below about 1 meV. We interpret the observed non-equilibrium behavior as due to resonant trapping of these low-energy phonons. (literal)

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