The Magnetic Susceptibility of Nd Metal

The magnetic susceptibility of neodymium metal has been measured over the temperature range of 20.4°K-300°K. The metal was found to obey a Curie-Weiss law above 145°K with a paramagnetic Curie point of -16°K and an effective moment of 3.68 Bohr magnetons. Near 145°K there appears to be a change in slope of the curve of $\frac{1}{\chi }$ vs $T$. From 145°K to 31.5°K the metal again obeys a Curie-Weiss law with a paramagnetic Curie point of about 1°K and an effective moment of 3.35 Bohr magnetons. The low-field susceptibility at 20.4°K is much larger than predicted by the low-temperature Curie-Weiss law, and the susceptibility has a definite field dependence.