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Photoresponse, electronic transport and magnetic properties of Ti-doped alpha-(CrxFe1-x)2O3


EMSL Project ID
47718

Abstract

The nucleation, growth and properties Ti-doped alpha-(CrxFe1-x)2O3 epitaxial films, prepared by oxygen assisted molecular beam epitaxy, will be explored in detail. Our goal is to understand the relationships that exist between composition, structure (local and global), and functional properties -- optical absorption, electronic transport and magnetization, individually, and in coupled forms. We aim to examine the roles of alloying and doping in modifying the charge-transfer gap, the threshold for photoconductivity, and the extent of spin polarization in the majority current. The unique suite of oxide film growth, materials characterization, and functional properties determination in EMSL enables this work to be carried out with unparalleled depth and rigor.

Project Details

Start Date
2012-11-05
End Date
2013-09-30
Status
Closed

Team

Principal Investigator

Scott Chambers
Institution
Pacific Northwest National Laboratory

Team Members

Sara Chamberlin
Institution
Pacific Northwest National Laboratory

Mark Bowden
Institution
Pacific Northwest National Laboratory

Tiffany Kaspar
Institution
Pacific Northwest National Laboratory

Related Publications

Kaspar TC, SE Chamberlin, and SA Chambers. 2013. "Surface Structure of a-Cr2O3(0001) by X-Ray Photoelectron Diffraction After Activated Oxygen Exposure." Abstract submitted to AVS 60th International Symposium, Long Beach, CA. PNNL-SA-95440. Published in Surface structure of ?-Cr2O3(0001) after activated oxygen exposure, vol. 618, pp. 159-166. ELSEVIER, Richland.