Journal
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
Volume 100, Issue 4, Pages 1217-1220Publisher
SPRINGER
DOI: 10.1007/s00339-010-5881-z
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Funding
- German Science Foundation (DFG) [SFB762]
- Grant Agency of the Czech Republic [202/07/0591]
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Optical properties of epitaxial BiFeO3 thin films grown via pulsed-laser deposition on (110) DyScO3 substrates have been investigated. Their near-normal spectroscopic reflectivity was measured in the spectral range 2 to 14 eV at room temperature, while spectroscopic ellipsometry in the spectral range 1-6 eV was measured in the temperature range from 300 to 775 K. The optical response functions have been calculated and a direct optical gap was determined varying from 2.75 to 2.70 eV in this temperature range.
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