6533b7cefe1ef96bd1257086
RESEARCH PRODUCT
Fragmenting gadolinium: Mononuclear polyoxometalate-based magnetic coolers for ultra-low temperatures
Marco EvangelistiJavier SeséOscar MonteroM. J. Martínez-pérezSalvador Cardona‐serraEugenio CoronadoFernando Luissubject
Materials scienceMolecular nanomagnetsEntropyMechanical EngineeringGadoliniumchemistry.chemical_elementGadoliniumNanotechnologyTungsten CompoundsCold TemperatureMagneticschemistryMechanics of MaterialsPolyoxometalateMagnetic refrigerationmedia_common.cataloged_instanceGeneral Materials ScienceEuropean unionmedia_commondescription
The 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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-01-01 |