An Fe-N film was deposited on a GaAs(100) substrate by ion-beam-assisted deposition at an N/Fe atomic arrival ratio of 0.12. The results from X-ray diffraction showed that the film consisted of the Fe 16 N 2 phase. The results of an annealing experiment indicated that the Fe 16 N 2 phase formed is stable after annealing at 150 degrees C. At 200 degrees C, the Fe 16 N 2 started to decompose to alpha -Fe and gamma '-Fe 4 N. And it converted to alpha -Fe and gamma '-Fe 4 N completely at 300 degrees C. The magnetic properties of films annealed at different temperatures were also measured and the results are discussed.
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Jiang et al. (1994) studied this question.
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