Magnetovolume effect in transition metal-metalloid amorphous alloys

S. Ishio, M. Takahashi

    Research output: Contribution to journalArticlepeer-review

    18 Citations (Scopus)

    Abstract

    The thermal expansion, spontaneous volume magnetostriction ωs, forced volume magnetostriction ( ∂ω ∂H) and Young's modulus of amorphous Fe-B, Fe-P, Co-B and (Fe-M)77Si10B13 (M = Cr, Mn, Co, Ni) alloys have been measured to make clear the magnetovolume effect in transition metal-metalloid amorphous alloys. The thermal expansion coefficient α, ωs and ( ∂ω ∂H) are dependent on the number of d-electrons per transition metal atom neff calculated based on the charge transfer model. The neff vs. α, ωs and ( ∂ω ∂H) curves are quite similar to the corresponding curves in fcc alloys. The maxima in those curves are, however, found at neff ≈ 8.2 for the amorphous alloys in contrast with neff ≈ 8.7 for the fcc Fe-Ni alloys. On the other hand, Young's modulus measured under the saturation of magnetization is governed by the molar volume, irrespective of neff. The magnetovolume effect in transition metal-metalloid amorphous alloys is discussed in connection with the instability of ferromagnetism of amorphous Fe.

    Original languageEnglish
    Pages (from-to)93-100
    Number of pages8
    JournalJournal of Magnetism and Magnetic Materials
    Volume50
    Issue number1
    DOIs
    Publication statusPublished - 1985 May

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

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