,Magneto-Caloric Response of a Gd55Co25Al18Sn2 Bulk Metallic Glass

• 作 者: DING Ding ZHANG Yi-Qing XIA Lei
• 机 构: Laboratory for Microstructure, Institute of Materials, Shanghai University, Shanghai 200072
• 出 处: 中国物理快报（英文版）
• 发表日期: 2015年10期
• 关键词: @@

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 (-△Spmeak) and the magnetic refrigerant capacity (RC) of the BMG under a field of 5 T are about 9.32J.kg-1.K-1 and 832J.kg-1,respectively,both of which are larger than the values of the Gd55Co25Al2o BMG.The mechanism for the improved MCE by minor Sn addition is studied and the field dependence of-△Spmeak is investigated for a better understanding on the magneto-caloric behaviors of Gd55 C025Al18Sn2 BMG.