Ferromagnetic Co-doped rutile TiO2 singel crystals were successfully synthesized by high temperature ion implantation and charaterized by a variety of techniques. Co is uniformly distrubuted to the depth of ~300nm with an average concentration of ~2 at. %, except in the near-surface region, where the concentration is ~3 at. %. Magnetic measurements reval ferromagnetic behavior at room temperature with an effective saturation magnetization of ~0.6 ub/Co atom. The Co formal oxidation state is found to be +2 throughouth the implanted region, and no Co(0) is detected.
Revised: August 18, 2014 |
Published: May 31, 2004
Citation
Shutthanandan V., S. Thevuthasan, S.M. Heald, T.C. Droubay, M.H. Engelhard, T.C. Kaspar, and D.E. McCready, et al. 2004.Room Temperature Ferromagnetism in Ion-implanted Co-doped TiO2(110) Rutile.Applied Physics Letters 84, no. 22:4466-4468.PNNL-SA-40229.