Cr-doped TiO 2 anatase: A ferromagnetic insulator

T. Droubay, S. M. Heald, V. Shutthanandan, S. Thevuthasan, S. A. Chambers, J. Osterwalder

Research output: Contribution to journalArticle

68 Citations (Scopus)

Abstract

Epitaxial ferromagnetic films of Cr-doped TiO 2 anatase (Cr xTi 1-xO 2-x/2) were grown on LaAlO 3(001) using oxygen-plasma-assisted molecular-beam epitaxy. Cr K-shell x-ray absorption near-edge spectroscopy shows that the formal oxidation state of Cr is +3 throughout the films, with no evidence for either elemental Cr or half-metallic CrO 2. Cr is found to substitute for Ti in the lattice, with uniform distribution throughout the doped region of the film. The Cr-doped anatase films exhibit room-temperature ferromagnetism aligned in-plane, with a saturation magnetization of ∼0.6 μ B/Cr atom.

Original languageEnglish
Article number046103
JournalJournal of Applied Physics
Volume97
Issue number4
DOIs
Publication statusPublished - 15 Feb 2005
Externally publishedYes

Fingerprint

anatase
insulators
ferromagnetic films
oxygen plasma
x ray absorption
ferromagnetism
molecular beam epitaxy
substitutes
saturation
magnetization
oxidation
room temperature
spectroscopy
atoms

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

Cite this

Droubay, T., Heald, S. M., Shutthanandan, V., Thevuthasan, S., Chambers, S. A., & Osterwalder, J. (2005). Cr-doped TiO 2 anatase: A ferromagnetic insulator. Journal of Applied Physics, 97(4), [046103]. https://doi.org/10.1063/1.1846158

Cr-doped TiO 2 anatase : A ferromagnetic insulator. / Droubay, T.; Heald, S. M.; Shutthanandan, V.; Thevuthasan, S.; Chambers, S. A.; Osterwalder, J.

In: Journal of Applied Physics, Vol. 97, No. 4, 046103, 15.02.2005.

Research output: Contribution to journalArticle

Droubay, T, Heald, SM, Shutthanandan, V, Thevuthasan, S, Chambers, SA & Osterwalder, J 2005, 'Cr-doped TiO 2 anatase: A ferromagnetic insulator', Journal of Applied Physics, vol. 97, no. 4, 046103. https://doi.org/10.1063/1.1846158
Droubay T, Heald SM, Shutthanandan V, Thevuthasan S, Chambers SA, Osterwalder J. Cr-doped TiO 2 anatase: A ferromagnetic insulator. Journal of Applied Physics. 2005 Feb 15;97(4). 046103. https://doi.org/10.1063/1.1846158
Droubay, T. ; Heald, S. M. ; Shutthanandan, V. ; Thevuthasan, S. ; Chambers, S. A. ; Osterwalder, J. / Cr-doped TiO 2 anatase : A ferromagnetic insulator. In: Journal of Applied Physics. 2005 ; Vol. 97, No. 4.
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