Jj. Chen et Ml. Du, AN INVESTIGATION OF THE ZERO-FIELD SPLITTING AND OPTICAL-SPECTRA IN AGX-NI2+ (X=CL,BR), Physica. B, Condensed matter, 215(2-3), 1995, pp. 260-262
The optical spectra of AgX:Ni2+ (X = Cl, Br) in the O-h system, and th
e ZFS parameter D in the axial system have been calculated by means of
the mu K alpha model of the Ni2+-6X(-) (X = F, Cl, Br, I) cluster. Th
e calculation shows that the band distance in AgX:Ni2+ has been reduce
d isotropically and the axial system should be dependent on the Ni2+-v
acancy along the z-axis. The results agree well with experimental find
ings.