Experimental and Simulation of Electric Transport in Alkali Antimonite Glasses

0548994 - ÚSMH 2022 RIV US eng J - Journal Article
Kubliha, M. - Bošák, O. - Kostka, Petr - Labaš, V. - Lukič-Petrovič, S. - Čelič, N. - Tanuška, P. - Kebisek, M. - Soltani, M. T.
Experimental and Simulation of Electric Transport in Alkali Antimonite Glasses.
Russian Journal of Electrochemistry. Roč. 57, č. 7 (2021), s. 688-699. ISSN 1023-1935. E-ISSN 1608-3342
R&D Projects: GA ČR(CZ) GA19-07456S; GA MŠMT(CZ) 8X20053
Institutional support: RVO:67985891
Keywords : mixed alkali effect * heavy metal oxide glasses * electrical conductivity * thermally stimulated depolarisation current * neural network model
OECD category: Ceramics
Impact factor: 1.351, year: 2021
Method of publishing: Limited access
https://link.springer.com/article/10.1134%2FS1023193521070077

The non-linear response of various physical properties of glasses on mixing of alkali ions is a well-known anomaly in materials science. In this paper, the mixed alkali effect in antimony oxide based glasses with composition 60Sb(2)O(3)-20WO(3)-(20 x)Li2O-x(M2O), where x = 0, 5, 10, 15, 20 (in mol %) and M = Na or K, is studied. The influence of Na/Li and K/Li ratios on ionic AC and DC conductivities is studied. Temperature dependences of the DC conductivity obey Arrhenius-like relation. The conductivity steeply decreases with increasing Na or K content due to larger ionic radius of Na or K ions compared to that of Li. The relation between composition and local movement of electrical charge was investigated and quantified using the measurement of thermally stimulated depolarization currents. The artificial neural network methods for optimizing experimental parameters used in this paper represent a new approach in comparison with works done on glasses with similar composition. The prepared numerical model could be used for the description of the influence of polarization parameters and the optimization of further measurements oriented on activation energies of ion polarization related to local transport of electrical charge, i.e. Li+ and Na+ ions in our case.
Permanent Link: http://hdl.handle.net/11104/0325029