Excellent Glass Forming Ability and Refrigeration Capacity of a Gd_(55)Al_(2)0Ni_(12)Co_(10)Mn_(3)Bulk Metallic Glass  

作　　者：DING Ding WANG Peng GUAN Quan TANG Mei-Bo XIA Lei 丁鼎;王鹏;管权;汤美波;夏雷(Laboratory for Microstructure,Shanghai University,Shanghai 200072;Key Laboratory of Transparent and Opto-functional Inorganic Materials,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050)

机构地区：[1]Laboratory for Microstructure,Shanghai University,Shanghai 200072 [2]Key Laboratory of Transparent and Opto-functional Inorganic Materials,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050

出　　处：《Chinese Physics Letters》2013年第9期105-108,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 51171100 and 51271103.

摘　　要：We investigate an excellent refrigeration capacity𝑆Rc𝑑of Gd_(55)Al_(20)Ni_(12)Co_(10)Mn_(3)bulk metallic glass(BMG).The Gd_(55)Al_(20)Ni_(12)Co_(10)Mn_(3)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 880J·kg^(−1)under the field of 5T and 35%larger than that of other alloys reported previously,supposed to be closely related to the high effective moment(∼7.3μB)of the Gd 55 Al_(20)Ni_(12)Co_(10)Mn_(3)BMG.

关 键 词：alloy CASTING alloys 

分 类 号：TG1[金属学及工艺—金属学]