On the origin of high-temperature ferromagnetism in the low-temperature-processed Mn-Zn-O system

Darshan C. Kundaliya, S. B. Ogale, Samuel Lofland, S. Dhar, C. J. Metting, S. R. Shinde, Z. Ma, B. Varughese, Kandalam Ramanujachary, L. Salamanca-Riba, T. Venkatesan

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    449 Scopus citations

    Abstract

    The origin of ferromagnetism in a metastable phase rather than by carrier-induced interaction between separated Mn atoms in ZnO in a low-temperature-processed MnO2-ZnO system was demonstrated. It was observed that the ferromagnetism persists up to ∼980 K. It was shown that a uniform solution of Mn in ZnO does not form under low-temperature processing. The direct low-temperature film growth of Zn-incorporated Mn oxide shows ferromagnetism at low Zn concentration for an optimum oxygen growth pressure.

    Original languageEnglish (US)
    Pages (from-to)709-714
    Number of pages6
    JournalNature Materials
    Volume3
    Issue number10
    DOIs
    StatePublished - Jan 1 2004

    All Science Journal Classification (ASJC) codes

    • Chemistry(all)
    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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