Speaker
Description
Research into new, cost-effective photon-shielding materials is on the rise amid rising electromagnetic pollution. Double perovskite oxides are possible candidates for low-energy photon shielding due to their flexible structure. In this work, we report the effects of substituting the lanthanide site and B site on the effectiveness of the material in shielding low-energy photons. At energies below 6.54 eV, lanthanum-based oxides have mass attenuation coefficient (MAC) values that are more than 1.5 times those of the neodymium and samarium-based oxides. But at energies above 13.8 eV, the samarium-based oxides start to dominate in terms of mass attenuation coefficients. The samarium-based oxides have the lowest half-value layer (HVL) values, and lanthanum-based oxides have the highest values. In terms of the effective atomic numbers (Zeff), samarium-based oxides have the highest values. The composite scores calculated show that the samarium-based oxides have the best low-energy photon shielding properties. Cobalt-based oxides outperformed their nickel-based counterparts.