HIGH-RESOLUTION STUDY OF THE ANISOTROPY OF THE MAGNETIC-FIELD EFFECT ON THE E-4(G)-LEVEL OF MN2+ IN ZNS

The relative importance of the terms mu(B)g(e) S . H and mu(B) L.H of the Zeeman Hamiltonian which describes the E-4(G)-level of Mn2+ (d(5)) in ZnS has been investigated by a very precise determination of the a nisotropy of the magnetic field effect. Experimental and theoretical t ransition energies as given by the Hamiltonian mu(B)g(e) S . H differ by at most 0.2 cm(-1). The negligible effect of the contribution of th e term mu(B) L.H is analyzed in a second-order perturbation scheme inv olving spin-orbit interaction.