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Abstract
Sodium-calcium-phosphate glasses doped with SiO2 or Si3N4 having similar sodium ion concentrations were prepared by melt quenching. The conductivity was measured by impedance spectroscopy under nitrogen atmosphere in a wide frequency range (10 mHz–1 MHz) and wide temperature range (153–473 K). At 36.6 °C, DC conductivities of all glasses vary between 1.1 ∗ 10−12 and 8.9 ∗ 10−12 S cm−1 and have similar activation energies (between 0.87 and 0.91 eV), which are characteristic for an ionic conduction mechanism. The analysis of AC conductivities showed that the spectra are governed by one dynamic process – hopping of the mobile charge carriers - which may be described i.e., by the ‘concept of mismatch and relaxation’ or by the ‘random barrier’ model. The obtained results confirmed a higher influence of nitrogen incorporation on the various glass conductivity parameters than shown for silicon doping alone. However, the influence of fundamental structural changes on the glass conductivity is less relevant as is the overall sodium ion concentration, which remains the decisive factor for a high ion conduction.
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Authors (6)
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B Jonson
- Linnæus University Department of Built Environment and Energy Technology
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D Möncke
- Linnæus University Department of Built Environment and Energy Technology
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S Ali
- Linnæus University Department of Built Environment and Energy Technology
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Details
- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
SOLID STATE IONICS
no. 325,
pages 157 - 162,
ISSN: 0167-2738 - Language:
- English
- Publication year:
- 2018
- Bibliographic description:
- Wójcik N., Jonson B., Barczyński R., Kupracz P., Möncke D., Ali S.: Electrical properties of Na2O-CaO-P2O5 glasses doped with SiO2 and Si3N4// SOLID STATE IONICS. -Vol. 325, (2018), s.157-162
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.ssi.2018.08.011
- Sources of funding:
-
- Crafoord Foundation (Grant No: 20160900)
- ÅForsk Foundation (Grant No. 14-457).
- Verified by:
- Gdańsk University of Technology
Referenced datasets
- dataset Linear impedance of 2Si3N4–98(40Na2O-20CaO-40P2O5) glass measured with impedance spectroscopy method at low temperature region
- dataset Linear impedance of 0.5Si3N4–99.5(40Na2O-20CaO-40P2O5) glass measured with impedance spectroscopy method at low temperature region
- dataset Linear impedance of 40Na2O-20CaO-40P2O5 glass measured with impedance spectroscopy method at low temperature region
- dataset Linear impedance of 25Na2O–20CaO–5P2O5–50SiO2 glass measured with impedance spectroscopy method at low temperature region
- dataset Linear impedance of 1Si3N4–99(40Na2O-20CaO-40P2O5) glass measured with impedance spectroscopy method at low temperature region
- dataset Linear impedance of 1SiO2–99(40Na2O-20CaO-40P2O5) glass measured with impedance spectroscopy method at low temperature region
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