Magnetic cryocooling with Gd3+ centers in a light and compact framework
| Autor: | Lorusso, G., Sharples, J. W., Palacios, E., Roubeau, O., Brechin, E. K., Sessoli, R., Rossin, A., Tuna, F., McInnes, E. J. L., Collison, D., Evangelisti, M. |
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| Rok vydání: | 2012 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1002/adma.201301997 |
| Popis: | The magnetocaloric effect of gadolinium formate, Gd(OOCH)3, is experimentally determined down to sub-Kelvin temperatures by direct and indirect methods. This 3D metal-organic framework material is characterized by a relatively compact crystal lattice of weakly interacting Gd3+ spin centers interconnected via light formate ligands, overall providing a remarkably large magnetic:non-magnetic elemental weight ratio. The resulting volumetric magnetic entropy change is decidedly superior in Gd(OOCH)3 than in the best known magnetic refrigerant materials for liquid-helium temperatures and low-moderate applied fields. Comment: 11 pages, 4 figures |
| Databáze: | arXiv |
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