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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
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201510468
Subject(s) - magnetic refrigeration , dysprosium , tetrahydrate , dimer , liquid helium , molecular magnets , isotropy , anisotropy , molecule , materials science , refrigerant , magnetic field , liquid crystal , magnetic anisotropy , chemistry , crystallography , helium , crystal structure , thermodynamics , magnetization , inorganic chemistry , physics , 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.