Crystal Field Splitting and Optical Bandgap of Hexagonal LuFeO3 Films

Authors

Wenbin Wang
Hongwei Wang
Xiaoying Xu
Leyi Zhu
Lixin He
Elizabeth Wills
Xuemei Cheng, Bryn Mawr CollegeFollow
David J. Keavney
Jian Shen
Xifan Wu
Xiaoshan Xu

Document Type

Article

Version

Publisher's PDF

Publication Title

Applied Physics Letters

Volume

101

Publication Date

2012

Abstract

Hexagonal LuFeO₃ films have been studied using x-ray absorption and optical spectroscopy. The crystal splitting of Fe³⁺ is extracted as E_e′−E_e″ = 0.7 eV and E_a1′−E_e′ = 0.9 eV, and a 2.0 eV 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′>E_e′>E_e″ with slightly underestimated values and a bandgap of 1.35 eV.

Publisher's Statement

Copyright (2012) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Appl. Phys. Lett. 101, 241907 (2012) and may be found at http://apl.aip.org/resource/1/applab/v101/i24/p241907_s1.

Citation

W. Wang et al., Appl. Phys. Lett. 101, 241907 (2012).

DOI

10.1063/1.4771601