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 1χ 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.