An experimental trial for the synthesis of α″-(Fe100-xCox) 16N2 (x = 0-30) martensite films by reactive sputtering

H. Shoji, H. Nashi, K. Eguchi, Migaku Takahashi

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    In order to determine the synthesis conditions of α″-(Fe100-xCox)16N2, Fe-Co nitrided films were fabricated on MgO single-crystal substrates using reactive sputtering. The thermal stability of the α′Fe-Co phase was evaluated by measuring the temperature dependence of σs. It was found that: (1) for the as-deposited (Fe100-xCox)-N films, α′Fe-Co martensite phase with a stoichiometric N content of 11 at% can be formed up to x = 10, and with increasing x, α′Fe-Co phase with stoichiometric N content is not formed. (2) The phase decomposition temperature, Tpd, of α′-(Fe100-xCox)-N (x = 0-30) phase depends strongly on the Co and N contents of the α′Fe-Co phase. The Tpd of α′ phase decreases from 200°C (x = 0) to RT (x = 30) with increasing Co and N contents. (3) The formation at RT of stable α′-(Fe100-xCox)16N2 (x = 10-30) phase in the Fe-Co alloy system is concluded to be fairly difficult.

    Original languageEnglish
    Pages (from-to)202-210
    Number of pages9
    JournalJournal of Magnetism and Magnetic Materials
    Issue number2-3
    Publication statusPublished - 1996 Sep


    • Thermal stability
    • α″-(FeCo)N* Reactive sputtering

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics


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