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The publisher regrets the following acknowledgements contained typos in the original paper, J. Lu gratefully acknowledges that the work was partially supported by the National Key RD Program of China (Project No. 2017YFA0204403), the Major Program of the National Natural Science Foundation of China (NSFC) grant 51590892, the Hong Kong Collaborative Research Fund (CRF) Scheme (Ref. C4026-17W), Theme-based Research Scheme (Ref. T13-402/17-N), General Research Fund (GRF) Scheme (CityU 11247516, CityU 11209918 and CityU 11216219). We thank Z. F. Zhou for assistance with magnetron sputtering at the City University of Hong Kong. The publisher would like to apologise for any inconvenience caused. © 2020 Acta Materialia Inc.