TITLE

Room-temperature ferromagnetism in ion-implanted Co-doped TiO2(110) rutile

AUTHOR(S)
Shutthanandan, V.; Thevuthasan, S.; Heald, S. M.; Droubay, T.; Engelhard, M. H.; Kaspar, T. C.; McCready, D. E.; Saraf, L.; Chambers, S. A.; Mun, B. S.; Hamdan, N.; Nachimuthu, P.; Taylor, B.; Sears, R. P.; Sinkovic, B.
PUB. DATE
May 2004
SOURCE
Applied Physics Letters;5/31/2004, Vol. 84 Issue 22, p4466
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Ferromagnetic Co-doped rutile TiO2 single crystals were synthesized by high-temperature ion implantation and characterized by a variety of techniques. Co is uniformly distributed to a depth of ∼300 nm with an average concentration of ∼2 at. %, except in the near-surface region, where the concentration is ∼3 at. %. Ferromagnetic behavior is exhibited at room temperature with an effective saturation magnetization of ∼0.6 μB/Co atom. The Co is in a formal oxidation state of +2 throughout the implanted region, and no Co(O) is detected. © 2004 American Institute of Physics.
ACCESSION #
13154694

 

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