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Oxygen diffusion and proton conduction in La1−xSrxYO3−δ

✍ Scribed by E. Ruiz-Trejo; J.A. Kilner

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
371 KB
Volume
97
Category
Article
ISSN
0167-2738

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✦ Synopsis

Proton conduction has been detected in the solid solution La Sr YO (LSYO) below 5508C. Impedance spectroscopy

was used to measure the conductivity of La Sr YO under a variety of conditions. Samples measured after 12x x 32d

wet-treatments exhibited higher conductivities than those measured in nitrogen. The diffusion of oxygen was also studied using the Isotope Exchange Diffusion Profiling technique with Secondary Ion Mass Spectrometry. The low oxygen diffusivity supports the conclusion that proton conduction dominates at low temperatures.

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