Ferromagnetic Cr-doped rutile TiO2 single crystals were synthesized by high-temperature ion implantation. The associated structural, compositional and magnetic properties were studied by x-ray photoelectron spectroscopy, Rutherford backscattering spectrometry, proton induced x-ray emission, x-ray diffraction, Cr K- and L-shell near-edge x-ray absorption spectroscopy, and vibrating sample magnetometry. Cr was distributed uniformly to the depth of about 300 nm with an average concentration of ~1 at. %. The samples are semiconducting and ferromagnetic as implanted, with a saturation magnetization of 0.29???B/Cr atom at room temperature. Cr is in a formal oxidation state of +3 throughout the implanted region, and no CrO2 is detected.
Revised: August 18, 2014 |
Published: January 1, 2006
Citation
Shutthanandan V., S. Thevuthasan, T.C. Droubay, S.M. Heald, M.H. Engelhard, D.E. McCready, and S.A. Chambers, et al. 2006.Synthesis of Room-Temperature Ferromagnetic Cr-doped TiO2(110) Rutile Single Crystals using Ion Implantation.Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms 242, no. 1-2:198-200.PNNL-SA-43506.doi:10.1016/j.nimb.2005.08.149