Ionic conductivity and chemical diffusion in superionic LixCu2−xS (0≤x≤ 0.25)

2004 ◽  
Vol 241 (1) ◽  
pp. 114-119 ◽  
Author(s):  
M. Kh. Balapanov ◽  
I. G. Gafurov ◽  
U. Kh. Mukhamed'yanov ◽  
R. A. Yakshibaev ◽  
R. Kh. Ishembetov
Keyword(s):  
Ionic Conductivity ◽  
Chemical Diffusion

scholarly journals Visualization of the Vacancy-Wind Effect Occurring in Chemical Diffusion and Ionic Conductivity in Solids

2008 ◽  
Vol 273-276 ◽  
pp. 431-444 ◽  
Author(s):  
Irina V. Belova ◽  
Graeme E. Murch
Keyword(s):  
Computer Simulation ◽  
Ionic Conductivity ◽  
Radiation Damage ◽  
Chemical Diffusion ◽  
Wind Effect ◽  
Net Flux ◽  
First Time ◽  
Net Fluxes

Net fluxes of vacancies commonly occur during chemical interdiffusion in alloys, ionic conductivity and the annealing out of radiation damage. When atoms with different jump rates diffuse in a net flux of vacancies the phenomenon of the vacancy-wind effect will occur. This effect, first discovered by the late Dr John Manning, is a subtle phenomenon arising from a disturbed distribution of vacancies with respect to a given moving atom or species of atom. In this paper, the vacancy-wind effect is discussed and its visualization, performed for the first time by computer simulation, is demonstrated.

Influence of grain sizes on the ionic conductivity and the chemical diffusion coefficient in copper selenide

Ionics ◽  
2006 ◽  
Vol 12 (3) ◽  
pp. 205-209 ◽  
Author(s):  
M. Kh. Balapanov ◽  
E. K. Urazaeva ◽  
I. B. Zinnurov ◽  
R. Sh. Musalimov ◽  
R. A. Yakshibaev
Keyword(s):  
Diffusion Coefficient ◽  
Ionic Conductivity ◽  
Chemical Diffusion ◽  
Copper Selenide ◽  
Chemical Diffusion Coefficient ◽  
Grain Sizes

Ionic conductivity and chemical diffusion in LixCu2−xSe superionic alloys

Ionics ◽  
1999 ◽  
Vol 5 (1-2) ◽  
pp. 20-22 ◽  
Author(s):  
M. Kh. Balapanov ◽  
A. F. Nadejzdina ◽  
R. A. Yakshibayev ◽  
D. R. Lukmanov ◽  
R. Ja. Gabitova
Keyword(s):  
Ionic Conductivity ◽  
Chemical Diffusion

Sensors for Acid-Base-Active Gases

1994 ◽  
Vol 369 ◽  
Author(s):  
Joachim Maier ◽  
Michael Holzinger ◽  
Werner Sitte
Keyword(s):  
Ionic Conductivity ◽  
Major Part ◽  
Chemical Diffusion ◽  
Theoretical Background ◽  
Acid Base ◽  
Acid Gases ◽  
Reference Electrodes ◽  
Whole Cell ◽  
Redox Active ◽  
Partial Pressures

AbstractThe theoretical background for potentiometric and conductometric (bulk and surface) sensors is briefly discussed with regard to the usual application, viz. the detection of redox-active gases, and the importance of understanding chemical diffusion is stressed in this context. It is then shown how the analogous concept applied to acid-base interactions leads to powerful possibilities to measure partial pressures of acid-base active gases such as CO2, NH3 and H2O. Two examples of novel sensor principles are discussed: i) The response of the surface ionic conductivity of AgCl or CaF2 upon changes of partial pressures of (Lewis) basic or acid gases can be used to sense NH3 and BF3. ii) In the major part of the paper it is shown how the deliberate use of overall acid-base cell reactions in potentiometric arrangements leads to a fast and precise CO2-sensor. For this purpose, open reference electrodes based on Na2Ti6O13 or Na2SnO3 have been constructed. Owing to the criteria developed in the text the whole cell can be exposed to a CO2 and O2 containing atmosphere without the necessity of sealing. Detailed results are given.

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