Variations in β(T)-function due to addition of LiI-4AgI system
Impedance spectroscopy measurements of the LiI-4AgI samples, in the frequency range 20 Hz{1 MHz, and in the temperature range between 353 K and 378 K were made. Both pure and lithium-doped silver iodide showed blocking phenomena in the electrodes and the grain boundary. The blocking phenomena allowe...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2017 |
| País: | Colombia |
| Institución: | Pontificia Universidad Javeriana |
| Repositorio: | Repositorio Universidad Javeriana |
| Idioma: | inglés |
| OAI Identifier: | oai:repository.javeriana.edu.co:10554/31196 |
| Acceso en línea: | http://revistas.javeriana.edu.co/index.php/scientarium/article/view/17350 http://hdl.handle.net/10554/31196 |
| Access Level: | acceso abierto |
| Palabra clave: | null Electrical modulus; Ionic conductivity; Silver iodide; Lithium iodide; KWW function |
| Sumario: | Impedance spectroscopy measurements of the LiI-4AgI samples, in the frequency range 20 Hz{1 MHz, and in the temperature range between 353 K and 378 K were made. Both pure and lithium-doped silver iodide showed blocking phenomena in the electrodes and the grain boundary. The blocking phenomena allowed a change in the transport properties of the pure compound in respect to the doped compound as the temperature varied. The curves of electrical modulus in the LiI-4AgI system show asymmetric peaks corresponding with a weak correlation between mobile ions in the diusion process. The electrical conductivity in the AgI-LiI system can be described using a stretched relaxation function of the Kohlrausch-Williams-Watts (KWW) type. We speculat e that the phase of lithium dissolved in the silver iodide favors the formation of islands that disperses the conductivity due to the modication of the relationship among the microscopic energies: microscopic energy and migration energy. |
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