The SPM calculated ZFSPs b D

[1] and theoretically by Rudowicz et al. [2]; and a couple of experimental [3], [4] and [5] and theoretical [6] studies were carried out for K2ZnF4:Cu2+ system. Besides, numerous theoretical studies focused on some other systems K2ZnF4:Ni2+[7], K2ZnF4:Mn2+[8] and [9], and K2ZnF4:Co2+[10]. On the other hand, for Cr3+ doped K2ZnF4, the experimental [11] and [12] and theoretical [13] and [14] studies were carried out so as to understand the local structure around the dopant Cr3+ ions.