Medium range structure and power law conductivity dispersion in superionic glasses

On the Power Law Behavior of the A.C. Conductivity in Li Ion Conducting Perovskites

“…This work was conducted after that of Papathanassiou who studied the composition dependence of the ratio n A / ) (log for the glassy system [(Li 2 O) x (Na 2 O) 1 There the constancy of the ratio n A / ) (log has been found whose origin was attributed to the mixed alkali effect in the a.c. conductivity. Meanwhile, based on previous work 14) , we have shown that the constancy is not satisfied 12) . On the other hand 16) , Papathanassiou studied also a set of materials with different structure and suggested an empirical law that states that the temperature evolution of A log is proportional to the temperature evolution of n .…”

“…In our previous work 14) , we have studied the effect of adding AgI salt on the glassy network AgPO 3 . There, it has been found that by increasing the amount of salt, the number of Ag + ions bonded to I -and O 2-ions increase.…”

“…Here, A and n represent respectively, the pre-exponential factor and the power law exponent of Jonscher's law. By using the concept of bond fluctuation in superionic conductors proposed by one of the authors 13) , we have concluded that the universal aspect of the power law reflects the universal pattern of the potential barrier at intermediate length scales 14) . This work was conducted after that of Papathanassiou who studied the composition dependence of the ratio n A / ) (log for the glassy system [(Li 2 O) x (Na 2 O) 1 There the constancy of the ratio n A / ) (log has been found whose origin was attributed to the mixed alkali effect in the a.c. conductivity.…”

Electrical and Dielectric Properties of Agi-Ag2O-Bi2O3-B2O3 Ionic Glassy System

“…Super ionic conducting glasses have attracted considerable interest for the last several years [1][2][3][4][5][6][7][8][9][10].…”

“…Silver ion conductive glasses of the systems AgI-Ag 2 O-M x O y (M x O y =B 2 O 3 , P 2 O 5 , MoO 3 , etc.) exhibit high electrical conductivity (up to 5·10 −3 S·cm −1 at room temperature) [10][11][12][13][14][15][16][17][18][19][20][21][22][23] of purely ionic character. Glasses with Bi 2 O 3 were found to participate in forming stable glasses with high Bi 2 O 3 content [24][25][26][27][28] .…”