Abstract
Single crystals of praseodymium ethylsulphate have been cooled below 1°K by adiabatic demagnetization and the susceptibility, expressed in terms of the magnetic temperature T ∗, was measured as a function of T, using cerium magnesium nitrate as a thermometer. The specific heat was measured by electrically heating the sample. A systematic departure of the susceptibility from Curie's law and an anomaly in the specific heat were found. The results were interpreted and confirmed the existence of a variable splitting of the ground doublet, as predicted from paramagnetic-resonance experiments, with a root-mean-square value of Δ 0 = (0.53±0.04)°K, which is much larger than the one in the diluted salt.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
