Publication: Ferroelectric glass-ceramics from the PbO-Bi2O 3-GeO2 system
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Issued Date
2008
Resource Type
File Type
application/pdf
ISSN
10226680
Other identifier(s)
2-s2.0-62949106225
Rights Holder(s)
Scopus
Bibliographic Citation
Advanced Materials Research. Vol 55-57, No. (2008), p.473-476
Suggested Citation
Munpakdee A., Pengpat K., Tunkasiri T., Holland D. Ferroelectric glass-ceramics from the PbO-Bi2O 3-GeO2 system. Advanced Materials Research. Vol 55-57, No. (2008), p.473-476. Retrieved from: https://hdl.handle.net/20.500.14740/3726
Author(s)
Abstract
The glass ceramics from the PbO-Bi3O2-GeO2 system have been investigated. An excellent transparent glass can be obtained from the stoichiometric (S) composition, Pb3Bi2(GeO 4)3, but only by rapid-quenching to give very thin samples. This glass could not therefore be used to make good glass-ceramic samples for measuring the dielectric properties. The A-composition (34.50%PbO :11.49%Bi2O3: 54.01%GeO2) and B-composition (25.90%PbO: 8.63%Bi2O3: 65.47%GeO2) have been prepared to form more stable glasses. These two compositions gave good transparent and thick glass samples. DTA analysis has been used to examine the crystallisation temperatures of all glasses. The controlled heat treatment process has been applied to all crystallisation temperatures and glass-ceramic samples were obtained. It was found that S glassceramic contained Pb 3Bi2(GeO4)3 and Bi 2GeO5 while A glass-ceramic contained only Pb 3Bi2(GeO4)3 and was suitable for using in dielectric measurement. B glass-ceramic gave difficulty in identifying the phases. However, it was concluded that the glass-ceramic from this composition had three phases, which are PbGe4O9, PbGeO5 and Bi4(GeO4)3. Since this glass gave no PbO-Bi2O3-GeO2 ternary phase, the dielectric measurement concentrates only on the A glassceramic. The frequency dependence of ε" for the A glass-ceramic sample gave a loss peak at low frequency. © 2008 Trans Tech Publications, Switzerland.
Subject(s)
Crystallisation
Dielectric measurements
Ferroelectric
Frequency dependences
Glass samples
Glass-ceramic
Heat treatment process
Lead bismuth germinate
Low frequencies
Ternary phase
Three phasis
Transparent glass
Bismuth
Chemical analysis
Crystallization
Ferroelectric ceramics
Ferroelectricity
Functional materials
Intelligent materials
Lead
Lead alloys
Nanostructured materials
Quenching
Secondary batteries
Semiconducting tin compounds
Glass ceramics
Dielectric measurements
Ferroelectric
Frequency dependences
Glass samples
Glass-ceramic
Heat treatment process
Lead bismuth germinate
Low frequencies
Ternary phase
Three phasis
Transparent glass
Bismuth
Chemical analysis
Crystallization
Ferroelectric ceramics
Ferroelectricity
Functional materials
Intelligent materials
Lead
Lead alloys
Nanostructured materials
Quenching
Secondary batteries
Semiconducting tin compounds
Glass ceramics