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Crystal field splitting and optical bandgap of hexagonal LuFeO<inf>3</inf> films
Wang, W Wang, H Xu, X Zhu, L He, L Wills, E Cheng, X Keavney, DJ Shen, J Wu, X
Wang, W
Wang, H
Xu, X
Zhu, L
He, L
Wills, E
Cheng, X
Keavney, DJ
Shen, J
Wu, X
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Journal Article
Date
2012-12-10
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10.1063/1.4771601
Abstract
Hexagonal LuFeO3 films have been studied using x-ray absorption and optical spectroscopy. The crystal splitting of Fe3+ is extracted as Ee' - Ee = 0.7 eV and Ea1' - Ee' = 0.9 eV, and a 2.0eV optical bandgap is determined assuming a direct gap. First-principles calculations confirm the experiments that the relative energies of crystal field splitting states do follow E a1' > Ee' > Ee with slightly underestimated values and a bandgap of 1.35eV. © 2012 American Institute of Physics.
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Applied Physics Letters
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