Abstract
In this study, we investigated the glass-forming ability (GFA) and magnetocaloric effect (MCE) of Gd55Co20Al23Si2 bulk glassy alloy. It is found that the addition of 2 at% Si is effective for extension of the supercooled liquid region (ΔTx), the ΔTx is 55 K for the Gd55Co20Al25 glassy alloy, and increases to 79 K for the Gd55Co20Al23Si2 alloy. As a result, Gd55Co20Al23Si2 glassy alloys with diameters up to 5 mm were successfully synthesized. The alloys also exhibit large MCE, i.e., the magnetic entropy change (ΔSm) of 8.9 J kg-1 K-1, the full width at half maximum of the ΔSm (δTFWHM) of 87 K, and the refrigerant capacity (RC) of 774 J kg-1.
Original language | English |
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Pages (from-to) | 440-443 |
Number of pages | 4 |
Journal | Journal of Magnetics |
Volume | 16 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2011 |
Keywords
- Gd-based bulk glassy alloys
- Glass-forming ability
- Magnetic entropy change
- Magnetocaloric effect
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering