2026-10-29T19:59:23Zhttps://munzur-rdlopen.rawdatalibrary.net/oai/requestoai:munzur-rdlopen.rawdatalibrary.net:munzur/12442026-10-28T15:28:35Zopenairecom_munzur_1col_munzur_2com_munzur_12col_munzur_165Structural evolution and radiation shielding performance of nano-HfO2 doped lithium borotellurite glassesDurmus, HasanKilic, G.Ilik, E.Kavaz, E.Güler, ÖmerBirdogan, SelcukALMisned, GhadaTekin, H.O.Fast-neutron shieldingGamma-ray attenuationGlass-ceramic transitionLithium boro-tellurite glassNano-HfO<sub>2</sub> dopingThis study investigates the structural evolution and radiation shielding performance of lithium borotellurite glasses reinforced with nano-sized HfO2. We report on the competitive dynamics between the depolymerizing nature of the Li + network modifier and the high field strength Hf4+ nano-dopant, a relationship not previously explored in this matrix. Structural analysis via XRD and TEM reveals that the glass remains fully amorphous with homogeneously dispersed Hf rich nanodomains up to 4 mol%. A critical solubility threshold is identified at 6 mol%, where the precipitation of HfO2 and HfTe3O8 crystalline phases marks a distinct transition from an amorphous state to a glass-ceramic microstructure. Physical property measurements indicate that Hf4+ ions primarily occupy interstitial free volumes, leading to enhanced material density without significant network dilation. The incorporation of nano-HfO2 significantly augments gamma-ray attenuation efficiency, particularly in the low-energy region, by substantially increasing the effective atomic number and reducing the half value layer. Furthermore, the glasses exhibit robust fast-neutron shielding capabilities, outperforming conventional materials such as graphite and B4C. These findings establish nano-HfO2 as a potent structural and radiative modifier, providing a novel roadmap for designing high-density, multifunctional glass-ceramic shields for advanced nuclear applications.Elsevier Ltd2026Articlehttps://rdlopen.rawdatalibrary.net/r/munzur/1244https://doi.org/10.1016/j.radphyschem.2026.1138310969-806XenRadiation Physics and Chemistryinfo:eu-repo/semantics/closedAccessinfo:eu-repo/semantics/articlehttps://munzur-rdlopen.rawdatalibrary.net/tr/items/munzur/1244