Abstract

In this paper the calculations of magneto-optical Verdet constants and susceptibilities of CeF 3 and NdF 3 compounds in the temperature range 40–300 K are presented. It is found that the magneto-optical effects of these compounds are mainly caused by the intra-ionic electric dipole transitions between the 4f and 5d energy levels split by the crystal and magnetic fields. The mixed-valent behavior of the Ce ions in CeF 3 has an important effect on the Faraday rotation and susceptibility. The theoretical results are in agreement with experiments.

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