Crystals of salts of nickel and cobalt transitional elements for optical filters

Abstract

Works performed at the A. V. Shubnikov Institute of Crystallography on the development of UV range optical filters based on complex compounds of nickel and cobalt are reviewed. The structural relationships of the crystal optical properties and their thermal stability are considered. Fundamental features of mixed crystals grown from solution and advanced approaches to creating optical filters based on structurally perfect mixed crystals K2(Co, Ni)(SO4)2 · 6H2O are described. The possibility of creating UV-A optical filters by partial substitution of the ligand environment of transition metal ions is demonstrated.