Abstract

The oxidation of iron has been studied mostly with polycrystalline samples and at advanced stages of oxide formation. The formation of isolated iron oxide grains on single crystal iron films has rarely been observed. This work is to report the observation, by transmission electron microscopy, of such oxide grains formed by controlled oxidation of single crystal iron films.Single crystal iron films were obtained by vapor deposition from an electron beam evaporator onto polished (001) faces of NaCl. The substrate, temperature was 350°C. The vacuum just before deposition was about 8 × 10−6 torr. The deposition rate was 8 - 10 A/sec and the thickness of the film was in the order of 1000 Å.

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