Fe-incorporated Ti O₂ Nanotube Arrays: Electronic Structure and Magnetic Response

Authors

Pegah M. Hosseinpour, Northeastern University
Félix Jiménez-Villacorta, Northeastern University
Jing Liu, Northeastern University
Badih A. Assaf, Northeastern University
Ian J. McDonald, Northeastern University
Dario Arena, Northeastern UniversityFollow
Don Heiman, Northeastern University
Latika Menon, Northeastern University
Laura H. Lewis, Northeastern University

Document Type

Article

Publication Date

11-2018

Digital Object Identifier (DOI)

https://doi.org/10.1103/PhysRevB.98.195145

Abstract

Incorporating Fe atoms into the lattice is shown to significantly alter electronic and magnetic properties of TiO₂ nanotubes synthesized by electrochemical anodization of Ti-Fe alloy sheets. The effects of Fe incorporation on the nanotube morphology, crystallinity, crystal structure, magnetic behavior and electronic structure were investigated with crystallographic and magnetic probes, including synchrotron-based spectroscopy. Results indicate that the iron cations predominately adopt the Fe³⁺ configuration, leading to a large increase of the electronic density of states at the Fermi energy. This increase is anticipated to provide enhanced catalytic action, for instance, in the degradation of water and of air pollutants. These results provide insight for tailoring the functionality of these nanostructures for energy-related applications.

Was this content written or created while at USF?

No

Citation / Publisher Attribution

Physical Review B, v. 98, art. 195145

Scholar Commons Citation

Hosseinpour, Pegah M.; Jiménez-Villacorta, Félix; Liu, Jing; Assaf, Badih A.; McDonald, Ian J.; Arena, Dario; Heiman, Don; Menon, Latika; and Lewis, Laura H., "Fe-incorporated Ti O₂ Nanotube Arrays: Electronic Structure and Magnetic Response" (2018). Physics Faculty Publications. 52.
https://digitalcommons.usf.edu/phy_facpub/52