Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7988402 | Intermetallics | 2018 | 5 Pages |
Abstract
In this work, we report on the systematic variation of the glass-forming ability (GFA) and magnetocaloric effect (MCE) in Gd55Co20-xAl24Si1Fex (x = 0, 1, 2, 3, 4 and 5 at%) metallic glasses (MGs), which are potential candidates for magnetocaloric cooling applications. The addition of Fe broadens the full width of half maximum of magnetic entropy change (δTFWHM), thereby greatly increases the refrigeration capacity (RC). Accordingly, the δTFWHM as large as 118 K, magnetic entropy change |ÎSM| of 7.26 J kgâ1Kâ1 at 130 K, and corresponding large RC of 857 J kgâ1 under applied field of 5 T are obtained for the composition with 5 at% Fe substitution. By increasing the atomic fraction of Fe dopants, the Curie temperature TC increases systematically at the same time. Such high GFA of novel Gd-based MGs with large MCE makes them attractive candidates for magnetic refrigeration applications in the future.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Lin Xue, Jun Li, Weiming Yang, Chenchen Yuan, Baolong Shen,