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Concentration dependence of electric conductivity for fluorine-containing sodium borate glasses. / Pronkin, A. A.; Naraev, V. N.; Murin, I. V.; Sokolov, I. A.
в: Glass Physics and Chemistry, Том 26, № 3, 05.2000, стр. 268-273.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Concentration dependence of electric conductivity for fluorine-containing sodium borate glasses
AU - Pronkin, A. A.
AU - Naraev, V. N.
AU - Murin, I. V.
AU - Sokolov, I. A.
PY - 2000/5
Y1 - 2000/5
N2 - The influence of sodium fluoride additives on the physicochemical properties of glasses in the Na2O-B2O3 systems is investigated. The introduction of sodium fluoride into the Na2O · 2B2O3 and Na2O · 3B2O3 glasses leads to an increase in the electric conductivity. The temperature-concentration dependence of the electric conductivity has been investigated. It is shown that, in glasses of the NaF-Na2O · 2B2O3 system, an increase in the volume concentration of sodium ions from 2.4 × 10-2 to ∼3 × 10-2 mol/cm3 is accompanied by an insignificant decrease in the activation energy Eσ from 1.44 to 1.38 eV and a sharp (by a factor of -30) increase in the electric conductivity. In glasses of the NaF-Na2O"3B2O3 system, an increase in the concentration of sodium ions from 1.8 × 10-2 to ∼2.3 x 10~2 mol/cm3 brings about an increase in the electric conductivity by a factor of approximately 100 and an increase in Eσ from 1.6 to 1.83 eV. A further increase in the concen-tration of sodium ions (up to 2.5 × 10-2 mol/cm3) virtually does not affect the electric conductivity and Eσ. At the same concentration of sodium ions (≃2.46 × 10-2 mol/cm3) in the 9.8NaF · 90.2[Na2O •2B2O3] and 57.1NaF · 42.9[Na2O · 3B2O3] glasses, the electric conductivity and the activation energy are considerably higher in the glass with a larger fluorine content. The regularities revealed are interpreted in the framework of the microinhomogeneous glass structure.
AB - The influence of sodium fluoride additives on the physicochemical properties of glasses in the Na2O-B2O3 systems is investigated. The introduction of sodium fluoride into the Na2O · 2B2O3 and Na2O · 3B2O3 glasses leads to an increase in the electric conductivity. The temperature-concentration dependence of the electric conductivity has been investigated. It is shown that, in glasses of the NaF-Na2O · 2B2O3 system, an increase in the volume concentration of sodium ions from 2.4 × 10-2 to ∼3 × 10-2 mol/cm3 is accompanied by an insignificant decrease in the activation energy Eσ from 1.44 to 1.38 eV and a sharp (by a factor of -30) increase in the electric conductivity. In glasses of the NaF-Na2O"3B2O3 system, an increase in the concentration of sodium ions from 1.8 × 10-2 to ∼2.3 x 10~2 mol/cm3 brings about an increase in the electric conductivity by a factor of approximately 100 and an increase in Eσ from 1.6 to 1.83 eV. A further increase in the concen-tration of sodium ions (up to 2.5 × 10-2 mol/cm3) virtually does not affect the electric conductivity and Eσ. At the same concentration of sodium ions (≃2.46 × 10-2 mol/cm3) in the 9.8NaF · 90.2[Na2O •2B2O3] and 57.1NaF · 42.9[Na2O · 3B2O3] glasses, the electric conductivity and the activation energy are considerably higher in the glass with a larger fluorine content. The regularities revealed are interpreted in the framework of the microinhomogeneous glass structure.
UR - http://www.scopus.com/inward/record.url?scp=0034336248&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0034336248
VL - 26
SP - 268
EP - 273
JO - Glass Physics and Chemistry
JF - Glass Physics and Chemistry
SN - 1087-6596
IS - 3
ER -
ID: 88011294