ChemInform Abstract: MIXED-ALKALI EFFECT IN LOW-ALKALI GERMANATE GLASSES

1982 ◽  
Vol 13 (28) ◽  
Author(s):  
J. F. CORDARO ◽  
M. TOMOZAWA
Keyword(s):  
Mixed Alkali ◽  
Mixed Alkali Effect ◽  
Germanate Glasses

The Mixed Alkali Effect in Sodium Rubidium Germanate Glasses

1985 ◽  
Vol 61 ◽  
Author(s):  
J. N. Mundy ◽  
G.-L. Jin
Keyword(s):  
Ionic Conductivity ◽  
Glass Network ◽  
Theoretical Models ◽  
General Applicability ◽  
Alkali Ions ◽  
Mixed Alkali ◽  
Mixed Alkali Effect ◽  
The Many ◽  
The Relationship ◽  
Germanate Glasses

ABSTRACTThe lack of general applicability of the many theoretical models for the mixed alkali effect (MAE) in glasses is briefly reviewed. Although the MAE appears to be related to the bonding affinity of alkali ions to charge compensating centers in the glass network, experimental scatter and the difficulty of comparing different glass networks have prevented systematic tests of this relationship. The present paper discusses why the mixed alkali germanate glasses should provide a glass system where the concentration and strength of charge-compensating centers can be systematically varied and the relationship to the MAE tested. Such tests are only possible if the ionic conductivity of a series of mixed alkali germanate glasses can be measured in a reproducible manner. The measurements of the ionic conductivity of two series of X(Na,Rb)2O:(1-X)GeO2 glasses, with X = 0.19 and X = 0.29, respectively, suggest the necessary reproducibility can be attained.

scholarly journals Influence of glass network ionicity on the mixed‐alkali effect

2020 ◽  
Vol 11 (3) ◽  
pp. 396-414
Author(s):  
Courtney Calahoo ◽  
Yang Xia ◽  
Ru Zhou
Keyword(s):  
Glass Network ◽  
Mixed Alkali ◽  
Mixed Alkali Effect

scholarly journals OPTICAL PROPERTIES ON Li2O-K2O-WO3-B2O3 GLASS SYSTEM

2013 ◽  
Vol 22 ◽  
pp. 278-283
Author(s):  
A. EDUKONDALU ◽  
M. A. SAMEE ◽  
SHAIKH KAREEM AHMMAD ◽  
SAIR MD. TAQIULLAH ◽  
SYED RAHMAN ◽  
...  
Keyword(s):  
Glass Structure ◽  
Glass System ◽  
Alkali Concentration ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Mixed Alkali ◽  
Absorption Studies ◽  
Mixed Alkali Effect ◽  
Oxide Ion ◽  
B2o3 Glass

Mixed alkali tungsten borate glasses xLi2O–(30–x) K2O–10WO3–60B2O3 (0 < x < 30) were prepared from the melts. These glasses were characterized using X-ray diffraction, differential scanning calorimetry and density measurements. Optical absorption studies were carried out as a function of alkali content to look for mixed alkali effect (MAE) on the spectral properties of these glasses. From the study of ultraviolet absorption edge, the optical band gap energies and Urbach energies were evaluated. The average electronic polarizability of the oxide ion, optical basicity and the interaction parameters were also evaluated for all the glasses. Many of these parameters vary non-linearly exhibiting a minima or maxima with increasing alkali concentration, indicating the mixed alkali effect. An attempt is made to interpret MAE in this glass system in terms of its glass structure.

Mixed alkali effect in glasses containing MnO[sub 2]

2013 ◽  
Author(s):  
M. Sudhakara Reddy ◽  
Asha Rajiv ◽  
V. C. Veeranna Gowda ◽  
R. P. S. Chakradhar ◽  
C. Narayana Reddy
Keyword(s):  
Mixed Alkali ◽  
Mixed Alkali Effect

scholarly journals Monte Carlo simulation of the mixed alkali effect with cooperative jumps

2000 ◽  
Vol 62 (6) ◽  
pp. 8790-8793 ◽  
Author(s):  
Junko Habasaki ◽  
Yasuaki Hiwatari
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Mixed Alkali ◽  
Mixed Alkali Effect
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