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The influence of crystalline electrical field on magnetic and magnetocaloric properties in Er1−yTbyAl2 compounds.
- Source :
-
Journal of Magnetism & Magnetic Materials . Nov2017, Vol. 442, p265-269. 5p. - Publication Year :
- 2017
-
Abstract
- We report the anisotropy of magnetic field-induced entropy change in rare earth Er 1 - y Tb y Al 2 compounds (y = 0.00, 0.25, 0.50, 0.75 and 1.00). In the present work, we use a model Hamiltonian that includes the crystalline electrical field anisotropy in both Er and Tb magnetic sublattices, chemical disorder in exchange interactions among Er-Er, Tb-Tb and Er-Tb magnetic ions and the Zeeman effect. We investigated the isothermal magnetic entropy change Δ S T for a magnetic field of 1 T rotating from a hard 〈0 0 1〉 to the easy 〈1 1 1〉 direction. We also performed a systematic analysis of the reorientation temperature as a function of the magnetic field intensity. The anisotropic magnetocaloric effect highlights the applicability of this effect on the rotating magnetic refrigeration. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03048853
- Volume :
- 442
- Database :
- Academic Search Index
- Journal :
- Journal of Magnetism & Magnetic Materials
- Publication Type :
- Academic Journal
- Accession number :
- 124383077
- Full Text :
- https://doi.org/10.1016/j.jmmm.2017.06.120