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      Faceting–roughening transition of a Cu grain boundary under electron-beam irradiation at 300 keV

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          Abstract

          In this study, we examined the beam-irradiation effect on the structural evolution of the grain boundary (GB) in a Cu bicrystal at room temperature using a C s-corrected, monochromated transmission electron microscope at an acceleration voltage of 300 keV. Faceting of the GB was observed at a low current density of the electron beam. With increasing current density, the GB became defaceted. The faceting–roughening transition was shown to be reversible, as the process was reversed upon decreasing the current density. The structural transition is explained by inelastic scattering effects by electron-beam irradiation.

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          Radiation damage in the TEM and SEM.

          We review the various ways in which an electron beam can adversely affect an organic or inorganic sample during examination in an electron microscope. The effects considered are: heating, electrostatic charging, ionization damage (radiolysis), displacement damage, sputtering and hydrocarbon contamination. In each case, strategies to minimise the damage are identified. In the light of recent experimental evidence, we re-examine two common assumptions: that the amount of radiation damage is proportional to the electron dose and is independent of beam diameter; and that the extent of the damage is proportional to the amount of energy deposited in the specimen.
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            Statistical mechanics of equilibrium crystal shapes: Interfacial phase diagrams and phase transitions

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              Phase stability under irradiation: Ballistic effects

               G. Martín (1984)
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                Author and article information

                Contributors
                bolee@snu.ac.kr
                Journal
                Sci Rep
                Sci Rep
                Scientific Reports
                Nature Publishing Group UK (London )
                2045-2322
                30 July 2021
                30 July 2021
                2021
                : 11
                Affiliations
                GRID grid.31501.36, ISNI 0000 0004 0470 5905, Department of Materials Science and Engineering and Research Institute of Advanced Materials (RIAM), , Seoul National University, ; Seoul, 08826 South Korea
                Article
                95091
                10.1038/s41598-021-95091-7
                8324769
                34330998
                b9258f79-d26a-4391-9235-369be15aae9b
                © The Author(s) 2021

                Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

                Funding
                Funded by: FundRef http://dx.doi.org/10.13039/501100003725, National Research Foundation of Korea;
                Award ID: 2019R1A2C2002073
                Award ID: 2020R1A5A6017701
                Award ID: 2021R1A2C3005096
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                © The Author(s) 2021

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