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)(HO)}]·4 HO (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. Molecular refrigerants: The magnetocaloric effect of anisotropic hydrated dysprosium acetate was studied. Possible applications as molecular refrigerants are discussed. Cooling is attained by rotating aligned single-crystal samples in a constant applied magnetic field (see picture).
Rotating Magnetocaloric Effect in an Anisotropic Molecular Dimer
Lorusso Giulia;
2016
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)(HO)}]·4 HO (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. Molecular refrigerants: The magnetocaloric effect of anisotropic hydrated dysprosium acetate was studied. Possible applications as molecular refrigerants are discussed. Cooling is attained by rotating aligned single-crystal samples in a constant applied magnetic field (see picture).I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
