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Title

Fragmenting gadolinium: Mononuclear polyoxometalate-based magnetic coolers for ultra-low temperatures

AuthorsMartínez Pérez, M. J.; Montero, Oscar; Evangelisti, Marco; Luis, Fernando; Sesé Monclús, Javier ; Cardona-Serra, Salvador; Coronado, Eugenio
Issue Date2012
PublisherWiley-VCH
CitationAdvanced Materials 24(31): 4301-4305 (2012)
AbstractThe polyoxometalate clusters with formula [Gd(W 5O 18) 2] 9- and [Gd(P 5W 30O 110)] 12- each carry a single magnetic ion of gadolinium, which is the most widespread element among magnetic refrigerant materials. In an adiabatic demagnetization, the lowest attainable temperature is limited by the presence of magnetic interactions that bring about magnetic order below a critical temperature. We demonstrate that this limitation can be overcome by chemically engineering the molecules in such a way to effectively screen all magnetic interactions, suggesting their use as ultra-low-temperature coolers. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Publisher version (URL)http://dx.doi.org/10.1002/adma.201200750
URIhttp://hdl.handle.net/10261/73557
DOI10.1002/adma.201200750
Identifiersdoi: 10.1002/adma.201200750
issn: 0935-9648
e-issn: 1521-4095
Appears in Collections:(ICMA) Artículos
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