Structure and magnetism of pure and Co-Doped TiO2 clusters

Xiao Hui Wei, Ralph Skomski, D. J. Sellmyer

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Anatase TiO2 cluster films having Co concentrations of 0,6, and 8 at.% were produced by inert-gas condensation and investigated by TEM, AFM, XRD, and SQUID. The cluster films are all magnetically ordered from 10 to 400 K, with magnetizations of about 3 emu/cc, and exhibit perpendicular magnetic anisotropy. For 6% Co, no Co clusters or secondary phases are apparent, but the 8% samples contain Co and CoO. The magnetism of the doped and undoped samples is largely associated with oxygen vacancies which tend to form near the cluster surfaces.

Original languageEnglish (US)
Article number5257197
Pages (from-to)4089-4091
Number of pages3
JournalIEEE Transactions on Magnetics
Volume45
Issue number10
DOIs
StatePublished - Oct 2009

Keywords

  • Dilute magnetic oxides
  • Dilute magnetic semiconductors
  • Magnetic moment
  • Proteresis
  • TiO

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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