Synthesis, Structure, and Spectroscopy of Epitaxial EuFeO 3 Thin Films
Abstract
Rare earth iron perovskites RFeO3, where R is a rare earth cation, exhibit an array of magnetic, catalytic, optical, and electrochemical properties. Here we study EuFeO3 films synthesized by molecular beam epitaxy to improve our understanding of the optical properties of ferrites. A combination of X-ray diffraction, X-ray reflectivity, Rutherford backscattering spectroscopy, and scanning transmission electron microscopy was used to characterize the film structure and cation composition. X-ray absorption spectroscopy confirms the nominal 3+ valence states of Eu and Fe. The optical properties of EuFeO3 were investigated using variable-angle spectroscopic ellipsometry between the photon energies of 1.25 and 5 eV. We find that EuFeO3 is a semiconductor with an onset of optical absorption near 2.5 eV. The absorption spectrum of EuFeO3 is blue-shifted with respect to LaFeO3 films, a result that is attributed to the structural differences between the two materials.
- Authors:
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- National Science Foundation (NSF); USDOE Office of Science - Office of Biological and Environmental Research
- OSTI Identifier:
- 1391715
- DOE Contract Number:
- AC02-06CH11357
- Resource Type:
- Journal Article
- Journal Name:
- Crystal Growth and Design
- Additional Journal Information:
- Journal Volume: 15; Journal Issue: 3; Journal ID: ISSN 1528-7483
- Publisher:
- American Chemical Society
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Choquette, Amber K., Colby, Robert, Moon, Eun Ju, Schlepütz, Christian M., Scafetta, Mark D., Keavney, David J., and May, Steven J. Synthesis, Structure, and Spectroscopy of Epitaxial EuFeO 3 Thin Films. United States: N. p., 2015.
Web. doi:10.1021/cg501403m.
Choquette, Amber K., Colby, Robert, Moon, Eun Ju, Schlepütz, Christian M., Scafetta, Mark D., Keavney, David J., & May, Steven J. Synthesis, Structure, and Spectroscopy of Epitaxial EuFeO 3 Thin Films. United States. https://doi.org/10.1021/cg501403m
Choquette, Amber K., Colby, Robert, Moon, Eun Ju, Schlepütz, Christian M., Scafetta, Mark D., Keavney, David J., and May, Steven J. 2015.
"Synthesis, Structure, and Spectroscopy of Epitaxial EuFeO 3 Thin Films". United States. https://doi.org/10.1021/cg501403m.
@article{osti_1391715,
title = {Synthesis, Structure, and Spectroscopy of Epitaxial EuFeO 3 Thin Films},
author = {Choquette, Amber K. and Colby, Robert and Moon, Eun Ju and Schlepütz, Christian M. and Scafetta, Mark D. and Keavney, David J. and May, Steven J.},
abstractNote = {Rare earth iron perovskites RFeO3, where R is a rare earth cation, exhibit an array of magnetic, catalytic, optical, and electrochemical properties. Here we study EuFeO3 films synthesized by molecular beam epitaxy to improve our understanding of the optical properties of ferrites. A combination of X-ray diffraction, X-ray reflectivity, Rutherford backscattering spectroscopy, and scanning transmission electron microscopy was used to characterize the film structure and cation composition. X-ray absorption spectroscopy confirms the nominal 3+ valence states of Eu and Fe. The optical properties of EuFeO3 were investigated using variable-angle spectroscopic ellipsometry between the photon energies of 1.25 and 5 eV. We find that EuFeO3 is a semiconductor with an onset of optical absorption near 2.5 eV. The absorption spectrum of EuFeO3 is blue-shifted with respect to LaFeO3 films, a result that is attributed to the structural differences between the two materials.},
doi = {10.1021/cg501403m},
url = {https://www.osti.gov/biblio/1391715},
journal = {Crystal Growth and Design},
issn = {1528-7483},
number = 3,
volume = 15,
place = {United States},
year = {Wed Mar 04 00:00:00 EST 2015},
month = {Wed Mar 04 00:00:00 EST 2015}
}