Sub-millikelvin station at Synergetic Extreme Condition User Facility*

Project supported by the National Basic Research Program of China (Grant Nos. 2016YFA0300601, 2015CB921402, 2011CB921702, and 2009CB929101), the National Natural Science Foundation of China (Grant Nos. 11527806, 91221203, 11174340, 11174357, and 91421303), and the Strategic Priority Research Program B of the Chinese Academy of Sciences (Grant No. XDB07010100). Z.G.C. acknowledges the support from Hundreds Talent Program, Chinese Academy of Sciences.
Cheng Zhi Gang1, †, Fan Jie1, Jing Xiunian1, Lu Li1, 2
       

Temperature dependence of the molar magnetic disorder entropy of a single crystal of CMN under different magnetic fields. Its angular moment is J = 1/2, with the entropy S = Rln 2. The entropy decreases at a lower temperature as higher ordering emerges. The ordering appears at a higher temperature with a stronger field. The process A → B → C indicates the process of adiabatic refrigeration. From A to B, the magnetic field is increased at the initial temperature Ti. From B to C, the magnetic field is decreased. The temperature decreases to the final temperature Tf. From C to A, the temperature is increased gradually owing to the heat leakage into the demagnetization stage. (Regenerated from Ref. [58].)