Synthesis of Room-Temperature Ferromagnetic Cr-doped TiO₂(110) Rutile Single Crystals using Ion Implantation

Journal Article · Sun Jan 01 04:00:00 EST 2006 · Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms, 242(1-2):198-200

DOI:https://doi.org/10.1016/j.nimb.2005.08.149· OSTI ID:881927

Shutthanandan, V.; Thevuthasan, Suntharampillai; Droubay, Timothy C.; Heald, Steve M.; Engelhard, Mark H.; McCready, David E.; Chambers, Scott A.; Nachimuthu, Ponnusamy; Mun, B. S.

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.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 881927
• Report Number(s): PNNL-SA-43506; 6292; 400403809
• Journal Information: Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms, 242(1-2):198-200, Journal Name: Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms, 242(1-2):198-200 Journal Issue: 1-2 Vol. 242
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION SPECTROSCOPY
ATOMS
Environmental Molecular Sciences Laboratory
ION IMPLANTATION
L SHELL
MAGNETIC PROPERTIES
MAGNETIZATION
MONOCRYSTALS
PROTONS
RUTHERFORD BACKSCATTERING SPECTROSCOPY
RUTILE
SATURATION
SYNTHESIS
VALENCE
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY
ion implantation
spintronics