Optical Properties of EuF3 and GdF3 and Paramagnetic Susceptibility of EuF3

Abstract

The optical properties of EuF3 and GdF3 are reinvestigated. Crystal field parameters derived from the data by using the D3h C2v descending symmetry procedure for EuF3 are (in cm−1): B = 465, B = 375, B = −232, B = −96, B = −114, B = −490, B = 83, B = −518, B = −162. The temperature dependent paramagnetic susceptibility of EuF3, is calculated by using the simulated wave functions. The calculated and experimental paramagnetic susceptibilities are in very good agreement. Les proprietes optiques de EuF3 et GdF3 ont ete reexaminees. A partir des niveaux observes, les parametres de champ cristallin ont ete determines par la methode de symetrie descendante D3h C2v pour EuF3 les parametres sont: B = 465, B = 375, B = −232, B = −96, B = −114, B = −490, B = 83, B = −518, B = −162 (en cm−1). En outre, l'evolution en fonction de la temperature de la susceptibilite paramagnetique de EuF3 a ete calculee grace aux fonctions d'onde deduites de la simulation. L'accord entre l'experience et le calcul est excellent.