한국분말재료학회지 (Journal of Powder Materials)

  • 제14권2호
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  • Pages.97-100
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  • 2007
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  • 2799-8525(pISSN)
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  • 2799-8681(eISSN)
한국분말재료학회 (*구 분말야금학회) (The Korean Powder Metallurgy & Materials Institute)
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헤테로 구조 Cu-Fe 나노분말의 제조 연구

Study of Mechanically Alloyed Nano Cu-Fe Particles With a Hetero-Structure

  • 엄영랑 (한국원자력연구원, 원자력나노소재응용랩) ;
  • 이희민 (한국원자력연구원, 원자력나노소재응용랩) ;
  • 이창규 (한국원자력연구원, 원자력나노소재응용랩)
  • Uhm, Y.R. (Nuclear Nanomaterials Development Lab., Korea Atomic Energy Research Institute) ;
  • Lee, H.M. (Nuclear Nanomaterials Development Lab., Korea Atomic Energy Research Institute) ;
  • Rhee, C.K. (Nuclear Nanomaterials Development Lab., Korea Atomic Energy Research Institute)
  • 발행 : 2007.04.28
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초록

The magnetic alloys of Cu-Fe ($Cu_{50}Fe_{50},\;Cu_{80}Fe_{20}\;and\;Cu_{90}Fe_{10}$) were prepared by a mechanical alloying method and their structural and magnetic behaviors were examined by X-ray diffraction and Mossbauer spectra. The magnetization curves did not distinctly show the saturation at 70 kOe for the concentrated alloys of $Cu_{80}Fe_{20}\;and\;Cu_{90}Fe_{10}$. The Mossbauer spectrum of $Cu_{80}Fe_{20}$ at room temperature shows one Lorentzian line of the paramagnetic phase, whereas the Mossbauer spectrum of $Cu_{90}Fe_{10}$ consists of sextet Lorentzian line at room temperature and a centered doublet line. The Mossbauer spectra of $Cu_{90}Fe_{10}$ measured in the temperature ranges from 13 to 295 K, implies that $Cu_{90}Fe_{10}$ to consists of two magnetic phases. One superimposed sextet corresponds to the ferromagnetic iron in Cu and the other one indicates the superparamagnetic iron rich phase.

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