Cryogenic Magnetocaloric Effect in a Ferromagnetic Molecular Dimer

Cryogenic Magnetocaloric Effect in a Ferromagnetic Molecular Dimer

Molecoolers: An unprecedentedly large cryogenic magnetocaloric effect is observed in gadolinium acetate tetrahydrate (see picture, Gd pink, O red, C gray). The change in its magnetic entropy is ascribed to the high magnetic density combined with dominant ferromagnetism. For the first time in a molec...

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Veröffentlicht in:Angewandte Chemie International Edition 2011-07, Vol.50 (29), p.6606-6609
Hauptverfasser: Evangelisti, Marco, Roubeau, Olivier, Palacios, Elias, Camón, Agustín, Hooper, Thomas N., Brechin, Euan K., Alonso, Juan J.
Format: Artikel
Sprache:eng
Schlagworte:
gadolinium
low-temperature physics
magnetic properties
magnetocaloric effects
molecular refrigerants
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Zusammenfassung:Molecoolers: An unprecedentedly large cryogenic magnetocaloric effect is observed in gadolinium acetate tetrahydrate (see picture, Gd pink, O red, C gray). The change in its magnetic entropy is ascribed to the high magnetic density combined with dominant ferromagnetism. For the first time in a molecular complex, direct measurements of the magnetocaloric effect corroborate indirect estimates based on heat capacity and magnetization.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201102640