Ceramics-Silikáty 37, (3) 153 - 158 (1993) |
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ELECTRICAL CONDUCTIVITY OF GLASSES IN THE SYSTEM CuCl-Cu₂O-(P₂O₅+MoO₃)
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Znášik Peter 1, Jamnický Miroslav 2, Híveš Ján 3,
Míka Martin 4
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1 Department of Ceramics, Glass and Cements
2 Department of Inorganic Chemistry
3 Department of Inorganic Technology, Slovak Technical University, Radlinského 9, 812 37 Bratislava
4 Department of Glass and Ceramics, Institute of Chemical Technology, Technická 5, 166 28 Prague
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This work deals with glasses of composition 18.0 CuCl - 36.5 Cu₂O - 45.5 (P₂O₅ +MoO₃) in which the MoO₃/(P₂O₅+MoO₃) molar ratio was varied. The glasses can be classified as glasses which contain mainly one type of cation (Cu⁺) and various kinds of polymeric or discrete anions. A distinct increase in conductivity (by two orders of magnitude) was observed with an increasing MoO₃/(P₂O₅+MoO₃) ratio. The maximum of conductivity is of the order of 10⁻⁴ Ω⁻¹cm;⁻¹. Increase in conductivity is in agreement with rapid decrease in activation energy for conduction and increase in concentration of Cu;⁺ conductive ions, which is due to substantial change in glass network with increasing content of MoO;₃. Electronic conductivities of glasses under study were lower by 3 orders of magnitude than their total electrical conductivities. |
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