磁性材料在低温技术中的新应用

New Application of the Magnetic Material to Cryogenic Engineering─Study on Magnetic Compounds Er(NiCo)_2 for Cryogenic Regenerator

研究了Ｅｒ（ＮｉＣｏ）＿２系新型磁性蓄冷材料的制备和材料的比热等物理性能，并且将该材料用于Ｖ－Ｍ制冷机进行了制冷实验。结果表明，Ｅｒ（ＮｉＣＯ）＿２系材料在２０Ｋ以下的比热远大于传统蓄冷材料铅，该材料作为蓄冷材料使用时，明显提高了制冷机的效率。

This paper investigates specific heatbehavior of compound Er( NiCo)_2 and describes theexperimental results of Vuilleumier( V-M)refrigerator which uses Er(NiCo)_2 as a regeneratorinstead of metal Pb. As a result.the specific heat ofthe compound is far larger than that of metal Pbbelow 10K,And V-M refrigerator efficiency isimproved by using Er(NiCo)_2 as a regenerator.