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. 2022 Mar 15;15(6):2144. doi: 10.3390/ma15062144

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

Refractive index spectra on Ta₂O₅/SiO₂ mixed oxide samples. Ta₂O₅ and SiO₂ reference curves were obtained from WVASE32^® Database by J.A. Woollam Co. Inc.