Abstract：Metallic glass ribbons with norminal composition of Gd56-xErxCo24Al20 (x=0,16,24,32,40,48) were fabricated by melt spinning technique, and rod samples of 3 mm in diameter were fabricated by copper- mold suck casting method The microstructure, thermal properties and magnetocaloric effect of these amorphous alloys were investigatedThe results show that these alloys have good glass formation ability, good thermal stability, and large magnetic entropy change (having a maximum value of 1258 J·kg-1·K-1 under a field change of 5 T) The magnetic entropy change curve has a broadened peak due to the amorphous structure The refrigeration capacity (RCP) under a field change of 5 T can be determined to be 729 J·kg-1,736 J·kg-1,757 J·kg-1, 621 J·kg-1,576 J·kg-1and 435 J·kg-1 for the 6 samples from x=0 to x=48, respectively With the increase of Er content, the Curie temperature decreases from 112 K to 165 K Due to the very good magnetocaloric effect, high thermal stability, free of hysteresis and well tunability of the working temperature, this series of alloys can be good candidates as magnetic refrigerants working in the temperature range of 10~150 K
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2016, Vol. 23 
