Anisotropic Magnetocaloric Effect in Nanostructured Magnetic Clusters
- 25 September 2001
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 87 (15), 157203
- https://doi.org/10.1103/physrevlett.87.157203
Abstract
We report the first experimental observation of anisotropic magnetocaloric effect (MCE) in the clusters. It is found that the magnetic anisotropy plays a very important role in the determination of the magnetocaloric effect. The maximum and minimum MCE's are observed when the applied magnetic fields are parallel and perpendicular to the easy axis, respectively. The quantum spin Hamiltonian of a cluster is used to calculate the partition function and the magnetization in a range of temperature and magnetic field. Excellent quantitative agreement between the experimental data and calculation is observed.
Keywords
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