Large Magnetocaloric Effect in a Wells-Dawson Type {Ni6Gd6P6} Cage

Large Magnetocaloric Effect in a Wells-Dawson Type {Ni6Gd6P6} Cage

Cool stuff: The usage of phosphonates has led to formation of a family of 3d–4f heterometallic cages with a Wells–Dawson‐like structure (see picture; Gd, Dy, or Y purple; Ni cyan; P green; O orange; C gray). Magnetic studies show ferromagnetic interactions within the oxo‐centered nickel triangle and...

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Veröffentlicht in:Angewandte Chemie International Edition 2011-04, Vol.50 (16), p.3692-3695
Hauptverfasser: Zheng, Yan-Zhen, Evangelisti, Marco, Winpenny, Richard E. P.
Format: Artikel
Sprache:eng
Schlagworte:
cage molecules
magnetocaloric effect
molecular refrigerants
phosphonates
polyoxometalates
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Zusammenfassung:Cool stuff: The usage of phosphonates has led to formation of a family of 3d–4f heterometallic cages with a Wells–Dawson‐like structure (see picture; Gd, Dy, or Y purple; Ni cyan; P green; O orange; C gray). Magnetic studies show ferromagnetic interactions within the oxo‐centered nickel triangle and huge entropy change in the Gd analogue, which, in principle, can be used as an ultralow‐temperature coolant.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201008074