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25 April 2024 |
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In situ observation of the formation of Fe3O4 in Fe4N (001) due to electron irradiation | | Z Q Liu
; H Hashimoto
; E Sukedai
; M Song
; K Mitsuishi
; K Furuya
; | | Date: |
27 Jun 2003 | | Journal: | Phys Rev Lett, 90 (25 Pt 1), 255504 | | Abstract: | gamma(’)-Fe4N was subjected to electron irradiation with the dose rate of 6.8 x 10(23)e m(-2) s(-1) in a 400 kV transmission electron microscope. The first in situ observation of the formation of Fe3O4 (O) on Fe4N (gamma(’)) with the orientation relationship of [100](O) parallel [100](gamma(’)) and <001>(O) parallel <001>(gamma(’)) has been made inside the microscope with the basic column vacuum of (5-6) x 10(-5) Pa. A mechanism is proposed involving the electron-stimulated dissociation of Fe-N chemical bonds, desorption of nitrogen from the surface, adsorption of oxygen to the surface, and the oxidization of excessive metallic iron on the surface. | | Source: | PubMed, pmid12857144 | | Services: | Forum | Review | Favorites | |
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