| Popis: |
On cubic ZnS crystals doped with Fe the paramagnetic resonance spectrum of a monoclinic FeZn+(A−)-X complex with a 4A2(F) ground state has been studied under band to band illumination. The monoclinic distortion of the cubic crystal field is due to one or more associated defects “X” whose origin remains unknown. The largest component of the distortion is oriented along a 〈1 0 0〉 axis. All transitions arise from a spin ground doublet | ± 1 2 〉 which can be described by an effective spin Hamiltonian with S′ = 1 2 . The g′-values are g′z′ = 2.223, g′x′ = 4.426, and g′y′ = 4.608 with x′ being [110] and y′, z′ inclined about 8.5° against [ 1 1 0] and [001], respectively, in the plane perpendicular to x′. The corresponding parameters of a spin Hamiltonian describing the full S = 3 2 (d 7 ) ground state manifold are gx′ = gy′ = 2.259, gz′ = 2.224 and E D = 0.0134 with D > 1 cm−1. |
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