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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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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