Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1803000 | Journal of Magnetism and Magnetic Materials | 2009 | 7 Pages |
Abstract
The magnetocaloric effect of the rare-earth intermetallic compound DyCu2 is explored through magnetization measurements. DyCu2 is paramagnetic at the room temperature but becomes antiferromagnetic below 27Â K (Neel temperature). Strong temperature and field dependence of magnetization in DyCu2 at and around the Neel temperature lead to a large magnetocaloric effect. An appreciable magnetocaloric effect persists well above the Neel temperature probably because of the presence of short-range ferromagnetic correlations in the paramagnetic state of DyCu2. This along with the absence of magnetic hysteresis lead to a large effective refrigerant capacity of 194Â J/kg below 44Â K, which makes the material important as a potential magnetic refrigerant for the cryogenic liquefier cycles.
Related Topics
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Authors
Parul Arora, Pragya Tiwari, V.G. Sathe, M.K. Chattopadhyay,