Gamma ray irradiation-induced variations in structure and optical properties of cerium/titanium-doped oxyfluoride transparent glass-ceramics

Zhenlin Wang; Laifei Cheng

doi:10.1016/j.materresbull.2017.04.010

Gamma ray irradiation-induced variations in structure and optical properties of cerium/titanium-doped oxyfluoride transparent glass-ceramics

Zhenlin Wang, Laifei Cheng

School of Materials Sience and Engineering

Chongqing Institute of Technology

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

4 Scopus citations

Abstract

CeO₂/TiO₂-doped oxyfluoride transparent glass ceramics with a composition of 45SiO₂–20Al₂O₃–10CaO–25CaF₂ were synthesized and irradiated by gamma ray. The effects of CeO₂/TiO₂ on the structure and optical properties of the samples before and after irradiation were investigated. Doping with CeO₂ causes network depolymerization and conversion of [AlO₆] to [AlO₄], enlarging the percolation region and promoting CaF₂ crystallization. Co-doping with CeO₂/TiO₂ helps reduce the intrinsic coloring of transparent glass ceramics containing only CeO₂, and the addition of TiO₂ enhances network interconnectivity, suppressing CaF₂ crystallization. Doping with CeO₂ and/or TiO₂ improves the structural stability of transparent glass ceramics upon irradiation and maintains the optical band gap and Urbach energy constant due to the defect saturation over the irradiation dose. Doping solely with CeO₂ allows for a lower radiation-induced absorption coefficient than co-doping CeO₂/TiO₂ because of the enhanced crystallization induced by CeO₂ and balanceable light absorption of polyvalent cerium ions.

Original language	English
Pages (from-to)	104-112
Number of pages	9
Journal	Materials Research Bulletin
Volume	92
DOIs	https://doi.org/10.1016/j.materresbull.2017.04.010
State	Published - 1 Aug 2017

Keywords

A. Glasses
B. Microstructure
B. Optical properties
B. Radiation damage
C. Raman spectroscopy

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10.1016/j.materresbull.2017.04.010

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title = "Gamma ray irradiation-induced variations in structure and optical properties of cerium/titanium-doped oxyfluoride transparent glass-ceramics",

abstract = "CeO2/TiO2-doped oxyfluoride transparent glass ceramics with a composition of 45SiO2–20Al2O3–10CaO–25CaF2 were synthesized and irradiated by gamma ray. The effects of CeO2/TiO2 on the structure and optical properties of the samples before and after irradiation were investigated. Doping with CeO2 causes network depolymerization and conversion of [AlO6] to [AlO4], enlarging the percolation region and promoting CaF2 crystallization. Co-doping with CeO2/TiO2 helps reduce the intrinsic coloring of transparent glass ceramics containing only CeO2, and the addition of TiO2 enhances network interconnectivity, suppressing CaF2 crystallization. Doping with CeO2 and/or TiO2 improves the structural stability of transparent glass ceramics upon irradiation and maintains the optical band gap and Urbach energy constant due to the defect saturation over the irradiation dose. Doping solely with CeO2 allows for a lower radiation-induced absorption coefficient than co-doping CeO2/TiO2 because of the enhanced crystallization induced by CeO2 and balanceable light absorption of polyvalent cerium ions.",

keywords = "A. Glasses, B. Microstructure, B. Optical properties, B. Radiation damage, C. Raman spectroscopy",

author = "Zhenlin Wang and Laifei Cheng",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2017",

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doi = "10.1016/j.materresbull.2017.04.010",

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AU - Wang, Zhenlin

AU - Cheng, Laifei

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N2 - CeO2/TiO2-doped oxyfluoride transparent glass ceramics with a composition of 45SiO2–20Al2O3–10CaO–25CaF2 were synthesized and irradiated by gamma ray. The effects of CeO2/TiO2 on the structure and optical properties of the samples before and after irradiation were investigated. Doping with CeO2 causes network depolymerization and conversion of [AlO6] to [AlO4], enlarging the percolation region and promoting CaF2 crystallization. Co-doping with CeO2/TiO2 helps reduce the intrinsic coloring of transparent glass ceramics containing only CeO2, and the addition of TiO2 enhances network interconnectivity, suppressing CaF2 crystallization. Doping with CeO2 and/or TiO2 improves the structural stability of transparent glass ceramics upon irradiation and maintains the optical band gap and Urbach energy constant due to the defect saturation over the irradiation dose. Doping solely with CeO2 allows for a lower radiation-induced absorption coefficient than co-doping CeO2/TiO2 because of the enhanced crystallization induced by CeO2 and balanceable light absorption of polyvalent cerium ions.

AB - CeO2/TiO2-doped oxyfluoride transparent glass ceramics with a composition of 45SiO2–20Al2O3–10CaO–25CaF2 were synthesized and irradiated by gamma ray. The effects of CeO2/TiO2 on the structure and optical properties of the samples before and after irradiation were investigated. Doping with CeO2 causes network depolymerization and conversion of [AlO6] to [AlO4], enlarging the percolation region and promoting CaF2 crystallization. Co-doping with CeO2/TiO2 helps reduce the intrinsic coloring of transparent glass ceramics containing only CeO2, and the addition of TiO2 enhances network interconnectivity, suppressing CaF2 crystallization. Doping with CeO2 and/or TiO2 improves the structural stability of transparent glass ceramics upon irradiation and maintains the optical band gap and Urbach energy constant due to the defect saturation over the irradiation dose. Doping solely with CeO2 allows for a lower radiation-induced absorption coefficient than co-doping CeO2/TiO2 because of the enhanced crystallization induced by CeO2 and balanceable light absorption of polyvalent cerium ions.

KW - A. Glasses

KW - B. Microstructure

KW - B. Optical properties

KW - B. Radiation damage

KW - C. Raman spectroscopy

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DO - 10.1016/j.materresbull.2017.04.010

M3 - 文章

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JO - Materials Research Bulletin

JF - Materials Research Bulletin

ER -

Gamma ray irradiation-induced variations in structure and optical properties of cerium/titanium-doped oxyfluoride transparent glass-ceramics

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Keywords

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