title: Rotating Magnetocaloric Effect in an Anisotropic Molecular Dimer.
abstract: 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 (H2 O)2}2]⋅4 H2O (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.
authors.affiliation: Instituto de Ciencia de Materiales de Aragón (ICMA), CSIC-, University of Zaragoza, 50009, Zaragoza, Spain.
authors.forename: Giulia
authors.initials: G
authors.lastname: Lorusso
authors.affiliation: Instituto de Ciencia de Materiales de Aragón (ICMA), CSIC-, University of Zaragoza, 50009, Zaragoza, Spain.
authors.forename: Olivier
authors.identifier: http://orcid.org/0000-0003-2095-5843
authors.initials: O
authors.lastname: Roubeau
authors.affiliation: Instituto de Ciencia de Materiales de Aragón (ICMA), CSIC-, University of Zaragoza, 50009, Zaragoza, Spain. evange@unizar.es.
authors.forename: Marco
authors.identifier: http://orcid.org/0000-0002-8028-9064
authors.initials: M
authors.lastname: Evangelisti
keywords: cryogenics; dysprosium; magnetocaloric effect; molecular magnetism; molecular refrigerants