Optical functions of uniaxial rutile and anatase (TiO2) revisited

Jellison, Gerald Earle; Cureton, Will F.; Arteaga, O.

doi:10.1116/6.0003719

Optical functions of uniaxial rutile and anatase (TiO₂) revisited

Journal Article · Mon Jul 15 00:00:00 EDT 2024 · Surface Science Spectra

DOI:https://doi.org/10.1116/6.0003719· OSTI ID:2406770

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Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Universitat de Barcelona (Spain)

In this study, the optical functions of uniaxial rutile and anatase (TiO2) were determined from 200 to 850 nm (6.2 to 1.46 eV) using several of four optical techniques: (1) standard spectroscopic two-modulator generalized ellipsometry (2-MGE), (2) near-normal-incidence two-modulator generalized ellipsometry microscopy (2-MGEM), (3) Mueller matrix transmission of rutile, and (4) polarized transmission of rutile. The 2-MGE measurements yielded highly accurate values of the dielectric functions and error estimates from 1.46 to 6.2 eV, whereas the polarization-dependent transmission yielded more accurate values of the absorption coefficient below the band edge of rutile. The 2-MGEM also measured the diattenuation, which is related to the birefringence, and other parameters but at near-normal incidence at a single wavelength (577 nm).

View Accepted Manuscript (DOE)

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 2406770

Journal Information:: Surface Science Spectra, Journal Name: Surface Science Spectra Journal Issue: 2 Vol. 31; ISSN 1055-5269

Publisher:: American Vacuum Society - AIPCopyright Statement

Country of Publication:: United States

Language:: English

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Optical functions of uniaxial rutile and anatase (TiO2) revisited

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Optical functions of uniaxial rutile and anatase (TiO₂) revisited