SKM 2023 – scientific programme
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MM: Fachverband Metall- und Materialphysik
MM 28: Liquid and Amorphous Metals
MM 28.6: Talk
Wednesday, March 29, 2023, 11:45–12:00, SCH A 118
Atomic transport in heavy ion irradiated amorphous PdNiP near the glass transition temperature — •Saba Khademorezaian1, Marilena Tomut1,2, Maximillian Demming1, Sergiy Divinski1, and Gerhard Wilde1 — 1Institute of Materials Physics, University of Münster, Wilhelm-Klemm-Str. 10, 48149 Münster — 22GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
The influence of ion irradiation on Ag diffusion in Pd40Ni40P20 bulk metallic glass was investigated by the tracer diffusion technique at temperatures below the glass transition. Bulk samples of Pd40Ni40P20 relaxed states were irradiated with 4.8 MeV/u Au, U, and Ca ions at the UNILAC accelerator at GSI Darmstadt. The achieved fluences were in the range of 5e10 to 1e13 ions/cm2. The diffusion rates of 110mAg isotopes after irradiation with heavy ions, Au and U, were found to be monotonously increasing with increasing total fluence. For the light ions, Ca, the diffusion enhancement shows an unexpected non-monotonous, cross-over behavior. The results are discussed relating the impacts of irradiation with swift heavy ions on structure modifications and the atomic kinetics in a bulk metallic glass.