Effect of swift heavy ion irradiation on Zr <sub>70</sub> Ni <sub>30</sub> binary metallic glass: a positron annihilation study
(2026) Physica Scripta — Vol. 101, n° 15, p. 155913 (2026)
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- Authors
Boukhemkhem, Wafa 
Hazem, Rafik Izerrouken, Mahmoud Ghidelli, Matteo Yahsi, Ugur
- Abstract
- In this work, doppler broadening spectroscopy (DBS) and positron annihilation lifetime spectroscopy (PALS) measurements were employed to investigate the evolution of irradiation-induced defects in Zr70Ni30 binary metallic glass exposed to 93.2 MeV 2 129 Xe 23+ heavy-ion irradiation at room temperature. The combined results revealed that ion irradiation initially increases the free-volume density with a homogeneous spatial distribution up to a fluence of ( 210 13 Xe cm-2). In contrast, increasing fluence ( 210 13 Xe cm-2), a reduction in open-volume defects was observed, which could be related to structural relaxation accompanied by modifications in atomic arrangement and defect distribution. Moreover, the correlation between the S-parameter and W-parameter was discussed to identify the nature of defects affecting the performance of Zr70Ni30 metallic glass after ion irradiation.
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Citations
Boukhemkhem, W., Hazem, R., Izerrouken, M., Ghidelli, M., Pardoen, T., Kuzeci, S., Yener, M., Tav, C., & Yahsi, U. (2026). Effect of swift heavy ion irradiation on Zr <sub>70</sub> Ni <sub>30</sub> binary metallic glass: a positron annihilation study. Physica Scripta, 101(15), 155913. https://doi.org/10.1088/1402-4896/ae5ae7 (Original work published 2026)