Chin. Phys. Lett.  2015, Vol. 32 Issue (10): 106101    DOI: 10.1088/0256-307X/32/10/106101
CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
Magneto-Caloric Response of a Gd55Co25Al18Sn2 Bulk Metallic Glass
DING Ding**, ZHANG Yi-Qing, XIA Lei
Laboratory for Microstructure, Institute of Materials, Shanghai University, Shanghai 200072
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DING Ding, ZHANG Yi-Qing, XIA Lei 2015 Chin. Phys. Lett. 32 106101
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Abstract The magneto-caloric effect (MCE) of a Gd55Co25Al18Sn2 bulk metallic glass (BMG) is investigated. The Gd55Co25Al18Sn2 as-cast rod prepared by a water-cooled copper mold suction casting method exhibits typical amorphous characteristics. The maximum magnetic entropy change (?ΔSmpeak) and the magnetic refrigerant capacity (RC) of the BMG under a field of 5 T are about 9.32 J?kg?1?K?1 and 832 J?kg?1, respectively, both of which are larger than the values of the Gd55Co25Al20 BMG. The mechanism for the improved MCE by minor Sn addition is studied and the field dependence of ?ΔSmpeak is investigated for a better understanding on the magneto-caloric behaviors of Gd55Co25Al18Sn2 BMG.
Received: 21 May 2015      Published: 30 October 2015
PACS:  61.43.Dq (Amorphous semiconductors, metals, and alloys)  
  81.05.Kf (Glasses (including metallic glasses))  
  75.30.Sg (Magnetocaloric effect, magnetic cooling)  
  81.20.-n (Methods of materials synthesis and materials processing)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/32/10/106101       OR      https://cpl.iphy.ac.cn/Y2015/V32/I10/106101
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DING Ding
ZHANG Yi-Qing
XIA Lei
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