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Figure 7
Infrared dielectric function with its real part (ɛ1) in blue, the imaginary part (ɛ2) in red, and the loss function based on equation (2[link]) in green compared to the corresponding models in dotted lines. A horizontal line at zero in and two vertical (dotted) lines are added to show the positions of the second zeros in the real part which correspond to the maximum in the loss function.

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
Volume 82| Part 2| April 2026| Pages 131-142
https://doi.org/10.1107/S2052520626000703
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