The effects of the thickness of magnetically hard- and soft-phase layers on magnetic properties and exchange coupling in multilayer magnets

W. Liu, Y. C. Sui, J. Zhou, X. K. Sun, C. L. Chen, Z. D. Zhang, D. J. Sellmyer

    Research output: Contribution to journalArticle

    21 Citations (Scopus)

    Abstract

    The structure and magnetic properties of multilayer magnets containing a hard phase [HP≡ (Nd0.95 Dy0.05) (Fe,Co,Nb,B)5.5] and a soft phase (SP≡Fe and Fe65 Co35) have been investigated. For the nanocomposite multilayer of Si(substrate)/Ti (30 nm) [HP (x nm) SP (y nm)] nTi (30 nm), the remanence enhancement has been observed at different thickness and volume fractions of hard- and soft-phase layers. The remanence increases and the coercivity decreases with the addition of soft phase, in comparison with the results of the single-layer film. For the multilayer of Si (substrate) Ti (30 nm) [HP (15 nm) Fe (5 nm)] nTi (30 nm) annealed at 575°C for 30 min, the coercivity of the multilayer reaches a maximum at n=20. Effects of the layer thickness and volume fraction of hard- and soft-phase layers on magnetic properties and exchange coupling in the multilayer films have been observed.

    Original languageEnglish
    Article number10K303
    JournalJournal of Applied Physics
    Volume97
    Issue number10
    DOIs
    Publication statusPublished - 2005 May 15

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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