Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1298517 | Solid State Ionics | 2009 | 5 Pages |
Abstract
The first-order phase transition that leads to the superionic phase in AgI-based materials is studied by dc-conductivity measurements and a free energy model. By properly adjusting the model parameters, an abrupt change of disordering concentration, ÎηÌ
, is predicted at a transition temperature, Tt. The temperature dependence of the dc-conductivity, Ï(T), is well fitted to the ηÌ
(T) equilibrium configuration obtained from the trial free energy function. The reported comparative study was done using an AgI-KI modified sample. The model also predicts a transition temperature, Tc for a continuous phase transition (ÎηÌ
 = 0).
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
J.C. Burbano, R.A. Vargas, D. Peña Lara, C.A. Lozano Z., H. Correa,