Optical and thermomechanical properties of rare-earth bixbyites and oxides with the fluorite structure

John Drazin; Randall Hay; Augustine Urbas; Woo-Yong Jang; Brahim Akdim; Andrew Schlup; Hyunjun Kim; Kathryn Doyle; Ted Autore

doi:10.1117/12.2662855

14 June 2023 Optical and thermomechanical properties of rare-earth bixbyites and oxides with the fluorite structure

John Drazin, Randall Hay, Augustine Urbas, Woo-Yong Jang, Brahim Akdim, Andrew Schlup, Hyunjun Kim, Kathryn Doyle, Ted Autore

Author Affiliations +

Proceedings Volume PC12518, Window and Dome Technologies and Materials XVII ; PC1251804 (2023) https://doi.org/10.1117/12.2662855
Event: SPIE Defense + Commercial Sensing, 2023, Orlando, Florida, United States

Abstract

Fluorite structure oxides include cubic-stabilized ZrO2, HfO2, ThO2, UO2, and some rare-earth compositions. Many rare-earth oxides also form cubic bixbyite (Ln2O3) structures. These materials are some of the most refractory oxides known. The optical and thermomechanical properties of fluorite structured oxides and rare-earth bixbyites are reviewed. Existing data on transmittance in the visible and infrared is summarized and compared with theoretical predictions from density functional theory and other physics-based models. Properties such as thermal conductivity, thermal expansion, melting point, modulus, hardness, refractive index, dielectric constant, thermochemical stability, and the trade-offs between these properties and optical properties are also discussed. New results for optical and thermomechanical properties for selected bixbyite and fluorite compositions will be presented, compared with existing data, and with model predictions.

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John Drazin, Randall Hay, Augustine Urbas, Woo-Yong Jang, Brahim Akdim, Andrew Schlup, Hyunjun Kim, Kathryn Doyle, and Ted Autore "Optical and thermomechanical properties of rare-earth bixbyites and oxides with the fluorite structure", Proc. SPIE PC12518, Window and Dome Technologies and Materials XVII , PC1251804 (14 June 2023); https://doi.org/10.1117/12.2662855

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KEYWORDS

Oxides

Fluorite

Thermography

Data modeling

Optical properties

Refractive index

Thermal modeling

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