【摘要】 用精密互感电桥在稀释致冷机上复现了NBS SRM767a 器件中的全部六个超导固定点温度,即Nb、Ph、In、Al、Zn和Cd的超导转变温度T_c。给出了每个点的互感变化△M和转变宽度w,并同三支锗电阻温度计的示值作了比较。更多还原

【Abstract】 All the 6 superconductive trasition points, i.e., those of Niobium, Lead, Indium, Aluminum, Zinc and Cadmium, in SRM767a device have been realized on a dilution refrigerator using an accurate mutual inductance bridge. The change of mutual inductance, AM and the transition width w are given. Tc values have been intercompared with the temperature values shown by 3 GRTs from Lake Shore cryotromics Inc.更多还原