http://www.cnr.it/ontology/cnr/individuo/prodotto/ID190675

Magnetocaloric effect in spin-degenerated molecular nanomagnets (Articolo in rivista)

Type

Label

Magnetocaloric effect in spin-degenerated molecular nanomagnets (Articolo in rivista) (literal)

Anno

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Alternative label

Evangelisti, M.(1); Candini, A.(1); Affronte, M.(1,2); Pasca, E.(3); de Jongh, L. J.(3); Scott, R. T. W.(4); Brechin, E. K.(4) (2009)
Magnetocaloric effect in spin-degenerated molecular nanomagnets
in Physical review. B, Condensed matter and materials physics
(literal)

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

Evangelisti, M.(1); Candini, A.(1); Affronte, M.(1,2); Pasca, E.(3); de Jongh, L. J.(3); Scott, R. T. W.(4); Brechin, E. K.(4) (literal)

Pagina inizio

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Rivista

Note

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1. CNR INFM, Natl Res Ctr nanoStruct & bioSyst Surfaces, I-41100 Modena, Italy 2. Univ Modena & Reggio Emilia, Dipartimento Fis, I-41100 Modena, Italy 3. Leiden Univ, Kamerlingh Onnes Lab, NL-2300 RA Leiden, Netherlands 4. Univ Edinburgh, Sch Chem, Edinburgh EH9 3JJ, Midlothian, Scotland (literal)

Titolo

Abstract

For molecular nanomagnets, excesses of magnetic entropy at finite low temperatures are induced by degrees of freedom resulting from macroscopic degeneracies of the molecular spin states. We experimentally demonstrate that this effect can be huge and efficiently exploited for enhancing the magnetic field dependence of the adiabatic temperature change. We specifically consider the Mn(32) molecular nanomagnet, proving it to be an excellent magnetic refrigerant below T approximate to 2 K, due almost entirely to its spin degeneracy. (literal)

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