【摘 要】
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We investigate an excellent refrigeration capacity Rc of Gd55Al20Ni12Co10Mn3 bulk metallic glass (BMG).The Gd55Al20Ni12Co10Mn3 glassy rod is subjected to Cu mol
【机 构】
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Laboratory for Microstructure, Shanghai University, Shanghai 200072“,”Key Laboratory of Transparent
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We investigate an excellent refrigeration capacity Rc of Gd55Al20Ni12Co10Mn3 bulk metallic glass (BMG).The Gd55Al20Ni12Co10Mn3 glassy rod is subjected to Cu mold suction-casting to prepare bulky metallic glasses,with a diameter of 3mm.The glass forming ability as well as the magnetic properties of the BMG is investigated.The BMG exhibits a rather high glass formation ability with critical diameter of about 5.6mm.The peak value of magnetic entropy change of about 8J·kg-1 K-1 is obtained in this alloy.This BMG alloy also exhibits excellent magnetic refrigerant capacity of about 880 J·kg-1 under the field of 5 T and 35％ larger than that of other alloys reported previously,supposed to be closely related to the high effective moment (～7.3μB) of the Gd55Al20Ni12Co10Mn3 BMG.
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