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Optical transitions in magnetoelectric Ga0.6Fe1.4O3 from 0.73 to 6.45 eV

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10 Author(s)
Sukgeun Choi ; National Renewable Energy Laboratory, Golden, Colorado 80401 ; Lefevre, Christophe ; Roulland, Francois ; Meny, Christian
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The optical properties of polycrystalline Ga0.6Fe1.4O3 bulk are determined by spectroscopic ellipsometry from 0.73 to 6.45 eV. Complex dielectric function ɛ = ɛ1 + iɛ2 spectra are obtained from the multilayer analysis. The ellipsometric data exhibit numerous optical structures, and the transition energies are accurately obtained by analyzing the second-energy derivatives of the data. The origins of the optical structures are explained in terms of Fe3+ ligand field transitions and ligand-to-metal charge transfer transitions.

Published in:

Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures  (Volume:30 ,  Issue: 4 )

Date of Publication:

Jul 2012

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