Structural instability of FeCo ultrathin films grown on MgO(100)

S. Mitani, T. Niizeki

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)


    Structures and their stability of FeCo ultrathin films grown on MgO(100) were investigated. Atomic force microscopy observations revealed dramatic structural changes from a continuous ultrathin layer to coarse islands by low temperature annealing. The results suggest that the thin layered structures of Fe based alloys as grown on MgO(100) are not so stable as expected from the relatively small lattice mismatch between Fe based alloys and MgO. This possibly explains annealing temperature dependence of tunnel magnetoresistance observed in a Fe/MgO/Fe(100) junction.

    Original languageEnglish
    Article number012121
    JournalJournal of Physics: Conference Series
    Issue number1
    Publication statusPublished - 2011

    ASJC Scopus subject areas

    • Physics and Astronomy(all)


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