oxides over the 0.015–2.506 MeV energy interval, where the Monte Carlo
simulation code was utilized to assess the gamma-ray shielding parameters.
The linear attenuation coefficients of the studied metal oxides varied in the
ranges of 65.556–0.039 cm(ZnO), 61.007–0.039 cm(Zn0.5Ni0.5O), and
56.050–0.040 cm (NiO). Therefore, the increased ZnO concentration
within the composite decreases the radiation shielding properties at low
energy intervals, while increasing them at high gamma-ray energy.