State of atoms and interatomic interaction in complex perovskite-like oxides: XII. Effect of replacement of diamagnetic atoms on exchange interactions between cobalt and nickel atoms in oxide solid solutions with the K2NiF4-type structure

Effect of replacement of diamagnetic atoms in layered oxides on exchange pa rameters was examined using the data of magnetic susceptibility of solid so lutions containing cobalt(III) and nickel(III). The parameter of ferromagne tic exchange remains constant, and the parameters of antiferromagnetic exch ange depend on the degree of ionic character of metal-oxygen bonds in the d iamagnetic sublattices, but they do not change on partial replacement of on e of diamagnetic atoms.