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Microstructure of Gd-doped dysprosium hafnate after irradiation with light and heavy ions

Year: 2026

Type: article

Abstract: The evolution of the microstructure of the $0.45\mathrm{Dy_2O_3}\cdot0.50\mathrm{HfO_2}\cdot0.05\mathrm{Gd_2O_3}$ ceramic compound under sequential irradiation with nickel and helium ions is presented. Irradiation was performed at temperatures of 350 and 550~$^{\circ}$C to damage doses in the range of 20--300 displacements per atom (dpa). The formation of a shallow and relatively uniform porous layer along the ion penetration path is shown. The average size and number density of voids and helium bubbles increase with increasing irradiation dose and temperature. The highest swelling was observed for the samples irradiated at 550~$^{\circ}$C to a dose of 300~dpa. It is shown that Gd-doped dysprosium hafnate exhibits slightly lower porosity and swelling parameters compared with undoped dysprosium hafnate. However, the selected gadolinium content does not allow any explicit trends to be established unambiguously.

Source: Advances in Nuclear Science and Applications

DOI: 10.63907/ansa.v2i2.87

Authors: M.S. Staltsov, D.P. Shornikov, M.D. Prokhorova, S.V. Chuvikov, A.A. Urusov, A.A. Mokrushin, V.D. Risovaniy

Institutions: National Research Nuclear University MEPhI, Research Institute of Scientific Research and Production Association

Language: English

Topic: Nuclear materials and radiation effects

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

OpenAlex ID: W7166647779

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