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Title: Complex refractive index of silica, silicate, borosilicate, and boroaluminosilicate glasses – Analysis of glass network vibration modes with specular-reflection IR spectroscopy

Journal Article · · Journal of Non-Crystalline Solids

A novel mathematical algorithm was developed to calculate refractive index (n + ik) from specular reflectance infrared (SR-IR) spectra in the strongly-absorbing glass network vibration region. The method is named as two-angle SR-IR (TASR-IR), since it is based on the Fresnel equations of specular reflectance at two incidence angles (10° and 45°). The results obtained from TASR-IR are comparable with the values obtained from spectroscopic ellipsometry. The TASR-IR method allows one to obtain the peak positions and intensities of fundamental network vibration modes of glass from the imaginary component (k) of complex refractive index without convolutions from the dispersion effect due to chains in the real component (n) of refractive index. The TASR-IR method is applied to silica, silicate, borosilicate, and boroaluminosilicate glasses; tentative peak assignments of glass network vibrations are proposed. The origin and concept of peaks in the vibrational spectra of glasses is discussed.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Center for Performance and Design of Nuclear Waste Forms and Containers (WastePD); Pennsylvania State Univ., University Park, PA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0016584
OSTI ID:
1600990
Alternate ID(s):
OSTI ID: 1582895
Journal Information:
Journal of Non-Crystalline Solids, Vol. 494, Issue C; ISSN 0022-3093
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 31 works
Citation information provided by
Web of Science

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Cited By (5)

Physical and optical properties of the International Simple Glass journal April 2019
Structural origins, tunable photoluminescence governed by impurities and white-light irradiation in transparent Pr 3+ :BaTiO 3 glass-ceramics journal January 2019
Correlation between IR peak position and bond parameter of silica glass: Molecular dynamics study on fictive temperature (cooling rate) effect journal June 2018
Effects of surface initial condition on aqueous corrosion of glass-A study with a model nuclear waste glass journal September 2018
Searching for correlations between vibrational spectral features and structural parameters of silicate glass network journal February 2020

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