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Large Magnetocaloric Effect in a Wells–Dawson Type {Ni 6 Gd 6 P 6 } Cage
Author(s) -
Zheng YanZhen,
Evangelisti Marco,
Winpenny Richard E. P.
Publication year - 2011
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201008074
Subject(s) - magnetic refrigeration , ferromagnetism , cyan , cage , crystallography , nickel , orange (colour) , entropy (arrow of time) , condensed matter physics , materials science , physics , chemistry , combinatorics , metallurgy , thermodynamics , mathematics , magnetic field , magnetization , optics , quantum mechanics
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.