Optical properties and concentration dependence of BaO-GeO2 in glass systems

J. Y. Cho; H. J. Kim; S. H. Jeong; J. H. Kim; M. J. Lee

doi:10.1016/j.ceramint.2023.07.159

Optical properties and concentration dependence of BaO-GeO₂ in glass systems

J. Y. Cho, H. J. Kim, S. H. Jeong, J. H. Kim, M. J. Lee

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

We prepared novel barium germanium (BaO–GeO₂) glass samples with varying BaO concentrations and investigated their physical and optical properties. We analyzed the refractive indices, glass transition temperatures (T_gs), molar volumes, and optical band gaps of the samples, which were measured and plotted against their BaO concentrations. The results showed that refractive indices, T_gs, molar volumes, and coefficients of thermal expansion increased with BaO concentration. Raman spectra showed structural network modifications and typical Germanium glass bands. The band at ∼529 cm⁻¹ was assigned to vibration bonds of Ge(4)-O-Ge(4), and that at ∼823 cm⁻¹ was attributed to stretching vibration of non-bridging oxygen (NBO) atoms.

Original language	English
Pages (from-to)	34409-34414
Number of pages	6
Journal	Ceramics International
Volume	49
Issue number	22
DOIs	https://doi.org/10.1016/j.ceramint.2023.07.159
State	Published - 15 Nov 2023

Keywords

BaO–GeO glass
Glass transition temperature
Optics
Raman spectroscopy
Refractive index

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10.1016/j.ceramint.2023.07.159

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title = "Optical properties and concentration dependence of BaO-GeO2 in glass systems",

abstract = "We prepared novel barium germanium (BaO–GeO2) glass samples with varying BaO concentrations and investigated their physical and optical properties. We analyzed the refractive indices, glass transition temperatures (Tgs), molar volumes, and optical band gaps of the samples, which were measured and plotted against their BaO concentrations. The results showed that refractive indices, Tgs, molar volumes, and coefficients of thermal expansion increased with BaO concentration. Raman spectra showed structural network modifications and typical Germanium glass bands. The band at ∼529 cm−1 was assigned to vibration bonds of Ge(4)-O-Ge(4), and that at ∼823 cm−1 was attributed to stretching vibration of non-bridging oxygen (NBO) atoms.",

keywords = "BaO–GeO glass, Glass transition temperature, Optics, Raman spectroscopy, Refractive index",

author = "Cho, {J. Y.} and Kim, {H. J.} and Jeong, {S. H.} and Kim, {J. H.} and Lee, {M. J.}",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier Ltd and Techna Group S.r.l.",

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doi = "10.1016/j.ceramint.2023.07.159",

language = "English",

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journal = "Ceramics International",

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TY - JOUR

T1 - Optical properties and concentration dependence of BaO-GeO2 in glass systems

AU - Cho, J. Y.

AU - Kim, H. J.

AU - Jeong, S. H.

AU - Kim, J. H.

AU - Lee, M. J.

PY - 2023/11/15

Y1 - 2023/11/15

N2 - We prepared novel barium germanium (BaO–GeO2) glass samples with varying BaO concentrations and investigated their physical and optical properties. We analyzed the refractive indices, glass transition temperatures (Tgs), molar volumes, and optical band gaps of the samples, which were measured and plotted against their BaO concentrations. The results showed that refractive indices, Tgs, molar volumes, and coefficients of thermal expansion increased with BaO concentration. Raman spectra showed structural network modifications and typical Germanium glass bands. The band at ∼529 cm−1 was assigned to vibration bonds of Ge(4)-O-Ge(4), and that at ∼823 cm−1 was attributed to stretching vibration of non-bridging oxygen (NBO) atoms.

AB - We prepared novel barium germanium (BaO–GeO2) glass samples with varying BaO concentrations and investigated their physical and optical properties. We analyzed the refractive indices, glass transition temperatures (Tgs), molar volumes, and optical band gaps of the samples, which were measured and plotted against their BaO concentrations. The results showed that refractive indices, Tgs, molar volumes, and coefficients of thermal expansion increased with BaO concentration. Raman spectra showed structural network modifications and typical Germanium glass bands. The band at ∼529 cm−1 was assigned to vibration bonds of Ge(4)-O-Ge(4), and that at ∼823 cm−1 was attributed to stretching vibration of non-bridging oxygen (NBO) atoms.

KW - BaO–GeO glass

KW - Glass transition temperature

KW - Optics

KW - Raman spectroscopy

KW - Refractive index

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U2 - 10.1016/j.ceramint.2023.07.159

DO - 10.1016/j.ceramint.2023.07.159

M3 - Article

AN - SCOPUS:85169055138

SN - 0272-8842

VL - 49

SP - 34409

EP - 34414

JO - Ceramics International

JF - Ceramics International

IS - 22

ER -

Optical properties and concentration dependence of BaO-GeO₂ in glass systems

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