Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5490063 | Journal of Magnetism and Magnetic Materials | 2017 | 14 Pages |
Abstract
The magnetic and magnetocaloric properties of amorphous and crystalline Tb0.67Au0.33 were compared. Amorphous Tb0.67Au0.33 alloy exhibits a spin glass state with a prevailing ferromagnetic behavior with a Curie temperature of 130Â K, while the crystalline alloy presents an antiferromagnetic behavior with a Néel temperature of 42Â K. Arrott plots show that the amorphous alloy presents a second order magnetic transition while the crystalline state exhibits a field induced a metamagnetic transition. Under magnetic field change of 20Â kOe, the maximum magnetic entropy changes were found to be 1.38 and 2.03Â J/kg.K, with corresponding relative cooling power of 153 and 40Â J/kg for the amorphous and crystalline Tb0.67Au0.33 alloys, respectively.
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Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
G. Alouhmy, R. Moubah, A. Berrada, N. Hassanain, L. Bessais, H. Lassri,