https://doi.org/10.1140/epjb/s10051-025-00966-7
Regular Article - Solid State and Materials
γ-ray irradiation effect on the electrical transport properties of Cu films
1
Research Center of Laser Fusion, China Academy of Engineering Physics, 621900, Mianyang, China
2
Institute of Chemical Materials, China Academy of Engineering Physics, 621900, Mianyang, China
a
yangbo807@caep.cn
b
fuqiubo@caep.cn
Received:
22
March
2025
Accepted:
16
May
2025
Published online:
1
July
2025
We reported the electrical transport properties of Cu films under γ-ray irradiation. The temperature dependence of resistance curves coincides with each other before and after irradiation when the irradiation dose is 
. The resistance of the irradiated Cu film is greater than that of the non-irradiated film across the whole temperature range when the irradiation dose is 
. This phenomenon is caused by the enhanced surface oxidation effect induced by γ-ray irradiation, and this mechanism has been confirmed by chemical composition analysis. Furthermore, the electrical transport properties of Cu films with and without polyimide coverage were measured during γ-ray irradiation. The experimental results showed that the bare Cu film undergoes surface oxidation, while the Cu film covered by polyimide does not. These results further validate the γ-irradiation enhanced oxidation mechanism in Cu films.
Supplementary Information The online version contains supplementary material available at https://doi.org/10.1140/epjb/s10051-025-00966-7.
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Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
