| Autor: |
Iguchi, E., Nakamura, S., Munakata, F., Kurumada, M., Fujie, Y. |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; 3/15/2003, Vol. 93 Issue 6, p3662, 3p, 3 Graphs |
| Abstrakt: |
Dielectric and dc measurements have been carried out on La[sub 0.8]Sr[sub 0.2]GaO[sub 3-δ], which has a high potential for the electrolyte material in a solid oxide fuel cell, so as to elucidate the correlation between O[sup 2-] diffusion and electric conduction. A dielectric relaxation shows up in loss tangent. The relative relation of activation energies as to dielectric relaxation and dc conduction suggests the ionic conduction due to O[sup 2-] diffusion assisted by free single oxygen vacancies taking place. The change of dc conductive behavior associated with attenuation of dielectric relaxation around 950 K indicates that another type of O[sup 2-] diffusion dominates the ionic conduction at high temperature. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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