Publication: Crystallization kinetic of Er3+-doped BiO1.5-GeO2-BO1.5 glass-ceramic
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Issued Date
2018
Resource Type
File Type
application/pdf
ISSN
2728842
Other identifier(s)
2-s2.0-85054129888
Rights Holder(s)
Scopus
Bibliographic Citation
Ceramics International. Vol 44, No. (2018), p.S46-S49
Suggested Citation
Panyata S., Eitssayeam S., Tunkasiri T., Munpakdee A., Pengpat K. Crystallization kinetic of Er3+-doped BiO1.5-GeO2-BO1.5 glass-ceramic. Ceramics International. Vol 44, No. (2018), p.S46-S49. doi:10.1016/j.ceramint.2018.08.262 Retrieved from: https://hdl.handle.net/20.500.14740/5797
Abstract
In this work, glass-ceramics containing bismuth germanate doped with a rare-earth element of composition 58.4BiO1.5: 23.4GeO2: 18.2BO1.5: 0.15ErO1.5 was investigated for its kinetic parameters of transformations via available models. The activation energy for the crystallization (Ec) and the Avrami exponent (n) were determined under non-isothermal conditions using various models. X-ray diffraction (XRD) was used to obtain the phase formation. The morphologies of the obtained glass-ceramics were investigated by Scanning electron microscopy (SEM). It was found that the crystallization activation energy and Avrami exponent were dependent on the crystallization fraction (x). The calculated value of the Avrami exponent (n) by using Ozawa and Lu model indicated that the crystallization mechanism in this glass is between two and three-dimensional crystal growth. Doping of Er2O3 was found to improve modification of this Bi2GeO5 glass-ceramic embedded with a desired crystal dimension. © 2018
Subject(s)
Activation energy
Chromium compounds
Crystallization kinetics
Doping (additives)
Erbium compounds
Germanium oxides
Glass ceramics
Kinetics
Rare earths
Scanning electron microscopy
Bismuth germanate
Calculated values
Crystal dimensions
Crystallization activation energy
Crystallization mechanisms
Non-isothermal condition
Phase formations
Three-dimensional crystals
Bismuth compounds
Chromium compounds
Crystallization kinetics
Doping (additives)
Erbium compounds
Germanium oxides
Glass ceramics
Kinetics
Rare earths
Scanning electron microscopy
Bismuth germanate
Calculated values
Crystal dimensions
Crystallization activation energy
Crystallization mechanisms
Non-isothermal condition
Phase formations
Three-dimensional crystals
Bismuth compounds