Synthesis of room-temperature ferromagnetic Cr-doped TiO2(1 1 0) rutile single crystals using ion implantation
✍ Scribed by V. Shutthanandan; S. Thevuthasan; T. Droubay; S.M. Heald; M.H. Engelhard; D.E. McCready; S.A. Chambers; P. Nachimuthu; B.S. Mun
- Publisher
- Elsevier Science
- Year
- 2006
- Tongue
- English
- Weight
- 119 KB
- Volume
- 242
- Category
- Article
- ISSN
- 0168-583X
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✦ Synopsis
Ferromagnetic Cr-doped rutile TiO 2 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 0.29l B /Cr atom at room temperature. Cr is in a formal oxidation state of +3 throughout the implanted region and no CrO 2 is detected.