Epitaxial and Nanoscale Fe-doped TiO2 and Ti-doped alpha-Fe2O3 - Magnetic, Electronic and Photochemical Properties Modification via Selective Doping
EMSL Project ID
35197
Abstract
The wide-ranging properties of transition metal oxides can in principle be expanded even further through selective doping. We propose to investigate the effect of doping TiO2 and alpha-Fe2O3 with cations of the other oxide on the electronic structure, photoactivity, and magnetic properties of the host. Our synthetic methods will include molecular beam epitaxy to generate highly-ordered crystalline films, atmospheric pressure chemical vapor deposition to generate high-surface-area mesostructured photoelectrodes, and wet chemical synthesis to yield crystalline nanoparticles that can be kept in colloidal suspension. By engineering the electronic and magnetic structure, we aim to modify the photochemical, static magnetic, and magnetotransport properties in ways that would be fundamentally illuminating as well as potentially useful for clean energy generation, organics destruction and oxide spintronics.
Project Details
Project type
Large-Scale EMSL Research
Start Date
2009-10-01
End Date
2012-09-30
Status
Closed
Released Data Link
Team
Principal Investigator
Team Members
Related Publications
Chambers SA. 2010. "Epitaxial Growth and Properties of Doped Transition Metal and Complex Oxide Films." Advanced Materials 22(2):219-248. doi:10.1002/adma.200901867
Kaspar TC, A Ney, AN Mangham, SM Heald, Y Joly, V Ney, F Wilhelm, A Rogalev, F Yakou, and SA Chambers. 2012. "Structure of epitaxial (Fe,N) codoped rutile TiO2 thin films by x-ray absorption." Physical Review. B, Condensed Matter and Materials Physics 86(3):035322. doi:10.1103/PhysRevB.86.035322
Kaspar TC, T Droubay, and SA Chambers. 2010. "Atomic oxygen flux determined by mixed-phase Ag/Ag2O deposition." Thin Solid Films 519(2):635-640. doi:10.1016/j.tsf.2010.08.081
Kaspar TC, T Droubay, SA Chambers, and P Bagus. 2010. "Spectroscopic evidence for Ag(III) in highly oxidized silver films by x-ray photoelectron spectroscopy." Journal of Physical Chemistry C 114(49):21562–21571. doi:10.1021/jp107914e
Mangham AN, N Govind, ME Bowden, V Shutthanandan, AG Joly, MA Henderson, and SA Chambers. 2011. "Photochemical Properties, Composition, and Structure in Molecular Beam Epitaxy Grown Fe “Doped” and (Fe,N) Codoped Rutile TiO2(110)." Journal of Physical Chemistry C 115(31):15416-15424. doi:10.1021/jp203061n