The synthesis of ferromagnetic Co-doped rutile TiO 2 single crystals was studied using high temperature ion implantation. Co was found to be uniformly distributed to a depth of ∼300 nm with an average concentration of ∼2 at.%. It was also found that the crystals exhibited ferromagnetic behavior at room temperature with an effective saturation magnetization of ∼0.6 μ B/Co atom. It was also found that the Co was in a formal oxidation state of +2 throughout the implanted region, and moreover no Co(O) was detected.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)