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Rotating Magnetocaloric Effect in an Anisotropic Molecular Dimer
Author(s) -
Lorusso Giulia,
Roubeau Olivier,
Evangelisti Marco
Publication year - 2016
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.201510468
Subject(s) - magnetic refrigeration , dysprosium , tetrahydrate , isotropy , liquid helium , materials science , dimer , anisotropy , refrigerant , molecule , magnetic field , liquid crystal , magnetic anisotropy , crystallography , condensed matter physics , thermodynamics , chemistry , helium , nuclear magnetic resonance , crystal structure , magnetization , physics , inorganic chemistry , optics , organic chemistry , optoelectronics , quantum mechanics , gas compressor
In contrast to the mainstream research on molecular refrigerants that seeks magnetically isotropic molecules, we show that the magnetic anisotropy of dysprosium acetate tetrahydrate, [{Dy(OAc) 3 (H 2 O) 2 } 2 ]⋅4 H 2 O ( 1 ), can be efficiently used for cooling below liquid‐helium temperature. This is attained by rotating aligned single‐crystal samples in a constant applied magnetic field. The envisioned advantages are fast cooling cycles and potentially compact refrigerators.