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Local Ordering Study of Nanostructured FeCo-C Alloys for Various Fe Contents
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- 저자
- 유용구, 양동석, Bingzhi Jiang, 유성초, J. M. Greneche
- 발행일
- 200606
- 출처
- Journal of the Korean Physical Society, v.48 no.6, pp.1463-1467
- ISSN
- 0374-4884
- 출판사
- 한국물리학회 (KPS)
- 협약과제
- 06MB2900, THz파 발진 변환 검출기 및 신호원, 강광용
- 초록
- Nanostructured (FexCo1￠®x)75C25 alloys were prepared by mechanical alloying. Local ordering around the central atom was examined for various Fe contents by using extended X-ray absorption .ne structure. X-ray diraction patterns indicate a cohenite-like phase for composition of x = 0.2, 0.5, and 0.8. The .rst shell of the Fourier transformed spectra changed with Fe content, indicating a change in the local ordering around the central Fe or Co atom. The x = 0.5 composition was well .tted to a (FeCo)3C phase, and the interatomic distance between the central atom and neighboring atoms was determined. The temperature dependence of magnetization was also studied for various Fe contents.0
- KSP 제안 키워드
- C phase, Fe content, Local ordering, Mechanical alloying(MA), X-ray absorption, temperature dependence