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介绍液氦温区索尔文制冷机研究情况。利用磁性材料在从无序到有序的磁相转变时,出现比热反常增大的特性,使制冷机的制冷温度直接达到了液氦温区。图2参2。
Introduce the research situation of the Solwin refrigerator in liquid helium. The use of magnetic materials in the disorder to the order of the magnetic phase transition, the abnormal increase in specific heat characteristics, so that the refrigerator’s cooling temperature reaches the liquid helium temperature directly. Figure 2 reference 2.