Energy-Level Scheme for Nd3+ in PbMoO4

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Abstract
Crystal‐field parameters appropriate for S 4 symmetry were fit to the 4 I 9/2 and 4 I 11/2 sublevel splitting of Nd3+ in PbMoO4. Intermediate coupling wavefunctions were used. J–J mixing between the 4 I 9/2 and 4 I 11/2 states was considered. The values found are (in cm−1): B 0 2 = 662.5, B 0 4 = − 690.0, B 0 6 = − 84.4, B 4 4 = − 984.2, B 4 6 = − 600.0, B 4 ′ 4 = − 6.0 , and B 4 ′ 6 = − 0.8 . The rms deviation of this fit was 4.8. We calculate ground‐state g∥ and g⊥ values of 1.283 and 2.585; experimentally these are 1.351 and 2.592. By changing the B m n slightly we obtain 1.348 and 2.586.

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