Paramagnetic Resonance Absorption in Praseodymium Trichloride

Abstract

Paramagnetic resonance absorption in crystalline solutions of Pr${\mathrm{Cl}}_3$ in La${\mathrm{Cl}}_3$ has been investigated at a frequency of 2.32×${10}^{10}$ ${\sec }^{-1\mathrm{}}$ and at the boiling point of He. The apparent $g\text{'}\mathrm{s}$, when $H$ is parallel and perpendicular to the $c$ axis have been found to be 1.79 and 3.98 respectively. The results have been discussed in terms of the known crystalline structure and Stark splittings.