High Magnetic Performance in a Two-Phase NdDyFeCoB Alloy

W.F. Miao, Paul Mccormick, Robert Street

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    3 Citations (Scopus)


    The structure and magnetic properties of mechanically milled Nd7Dy1Fe78Co10B4 have been studied. As-milled samples consist of a mixture of an amorphous phase and a b.c.c. FeCo phase and exhibit soft magnetic behaviour. Optimally annealed samples contain a nanocrystalline mixture of (NdDy)(2)(FeCo)(14)B and b.c.c. FeCo with an average grain size of 20 nm. Enhanced remanence values of up to 120 emu g(-1) and coercivity of 5.3 kOe are obtained in isotropic nanocomposite samples containing similar to 40vol.% of soft phase. The magnetic behaviour is associated with exchange coupling between the hard and soft magnetic phases. (C) 1997 Elsevier Science Ltd.
    Original languageEnglish
    Pages (from-to)687-691
    JournalSolid State Communications
    Issue number9
    Publication statusPublished - 1997

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