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arxiv: 2312.05820 · v1 · pith:HLKL3H24new · submitted 2023-12-10 · ❄️ cond-mat.mtrl-sci

Radiation resistance of fine-grained ceramics Y2.5Nd0.5Al5O12 under Xe-ions irradiation

Alekseeva L.S. (1) , Nokhrin A.V. (1) , Yunin P.A. (2) , Nazarov A.A. (1) , (2) , Orlova A.I. (1) , Skuratov V.A. (3) , Issatov A.T. (3)
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(4) (5) Kovylin R.S. (1) (6) Murashov A.A. (1) Boldin M.S. (1) Voronin A.V. (1) Chuvil'deev V.N. (1) Zotov D.A. (1) ((1) Lobachevsky State University of Nizhny Novgorod (2) The Institute for Physics of Microstructures RAS (3) Joint Institute for Nuclear Research (4) The Institute of Nuclear Physics (5) The Institute of Nuclear Physics (6) G.A. Razuvaev Institute of Organometallic Chemistry RAS)
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classification ❄️ cond-mat.mtrl-sci
keywords ceramicsirradiationfluencelayerunderal5o12cm-2fine-grained
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Oxide Y2.5Nd0.5Al5O12 (YAG:Nd) with garnet structure was synthesized in the powder and ceramics forms. Fine-grained YAG:Nd ceramics with a relative density of ~99% were obtained by the Spark Plasma Sintering method (SPS). The radiation resistance of ceramics was studied under irradiation with swift Xe-ions (E = 146 MeV). A gradient defect structure is formed in irradiated ceramics, varying from layer to layer. The strained YAG phase formed as a result of Xe ions irradiation is localized in a near-surface layer with a thickness of ~5 {\mu}m. Full amorphization of the samples was observed under irradiation with a fluence of 1x10^13 cm-2. The calculated critical fluence was 6.5x10^12 cm-2, which corresponded to 0.03 dpa. The microhardness of the surface layers of irradiated ceramics is less than the central layers, and, in general, decreases with increasing ion fluence.

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