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The superposition-model suggested by Newman has been used to calculate the zero-field splitting parameters (ZFS) at room temperature that fit the experimental data taken from the literature. The satisfactory reproduction of experimental values of ZFS parameters indicates that Mn2+ substitute in place of Ni2+ and Mg2+ in the lattices and does not cause appreciable local distortion in the host crystals...
The Newman superposition model has been used to investigate the substitution of Mn2+ for Zn2+ site in ammonium tetra flurozincate dihydrate and for Co2+ site in cobalt ammonium phosphate hexahydrate and cobalt potassium phosphate hexahydrate single crystals. The calculated values of zero field splitting parameter b20 at room temperature fit the experimental data with average intrinsic parameters...
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