Onset of ferromagnetism in pseudobinary FCC (Fe1-xNi x)92C8 alloys. I. Magnetic phase diagram

S. Ishio, K. Nushiro, M. Takahashi

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    Abstract

    The magnetic phase diagram of pseudobinary FCC (Fe1-xNi x)92C8 alloys (0.1<or=x<or=0.4) fabricated by rapid quenching has been investigated by static magnetisation, AC susceptibility and Mossbauer effect. The Pauli-type paramagnetism is found at x=0.1 and the spin glass is at 0.1<x<0.2. At 0.2<or=x<or=0.25 the weak ferromagnet coexists with the paramagnet, showing re-entrant spin-glass behaviour. The Fe magnetic moment gradually increases with increasing x from x=0.2, and reaches 2.8 mu B (or 2.1 mu B for Fe with the first neighbouring carbon) in the strong ferromagnet at x>or=0.25. The onset of ferromagnetism is discussed in connection with the lattice expansion due to an interstitial carbon and with the effective charge transfer from C to Fe. The magnetic phase diagram as well as the dependence of Fe magnetic moment on x is explained by the environmental effect.

    Original languageEnglish
    Article number022
    Pages (from-to)1093-1105
    Number of pages13
    JournalJournal of Physics F: Metal Physics
    Volume16
    Issue number8
    DOIs
    Publication statusPublished - 1986 Dec 1

    ASJC Scopus subject areas

    • Engineering(all)
    • Physics and Astronomy (miscellaneous)
    • Metals and Alloys

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