Nature of Current Carriers and Electric Properties of Glasses in xAg(2)O center dot (0.2-x)Tl2O center dot 0.8B(2)O(3) System

作者：Startsev Yu K^*; Pronkin A A; Sokolov I A; Murin I V

来源：Glass Physics and Chemistry, 2013, 39(1): 32-44.

DOI：10.1134/S1087659613010124

• glasses in the Ag2O-Tl2O-B2O3 system
• borate glasses
• electroconductivity
• conductivity activation energy
• transport numbers
• glass electrolysis

The effect of substituting thallium oxide with silver oxide on some physicochemical properties of glasses in the xAg(2)O-(0.2 - x)Tl2O center dot 0.8B(2)O(3) system at x = 0, 0.04, 0.08, 0.12, 0.16, and 0.20 has been investigated. It has been established that, upon this substitution the concentration dependences of the glasses conductivity activation energy and electroconductivity are of an extreme-type character, whereas similar dependences of other properties (microhardness, glass formation temperature, and density) are nearly linear. The study of the nature of current carriers and transport numbers in accordance with the Hittorf technique has shown that silver ions and protons (resulting from dissociation of water always present in glasses) participate in the transport of electric current. As was concluded based on the experimental data, thallium ions do not participate in electricity transport. The rule of additivity of electroconductivity is not valid for glasses in the Ag2O-Tl2O-B2O3 system.

• 出版日期2013-1