Magnetic Properties and Magnetic Entropy Changes of Annealed and Melt-spun DyCo2 Alloy
- 1 December 2001
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 40 (12R)
- https://doi.org/10.1143/jjap.40.6815
Abstract
Structure and magnetic properties of annealed and melt-spun DyCo2 alloy were investigated using X-ray diffraction (XRD), transmission electron microscopy (TEM) and vibrating sample magneometer (VSM). They both crystallize in the MgCu2-type structure. Curie temperature (T C) of them vary slightly, while their coervicities change remarkably. Annealed DyCo2 alloy has a rather large magnetic entropy change (|ΔS M|) near T C. The magnetization of melt-spun DyCo2 alloy changes gradually in the vicinity of T C. This fact leads to a relatively small |ΔS M| in melt-spun DyCo2 alloy, but the temperature range of |ΔS M| is widen, which is more effective in utility.Keywords
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