Comparative conductivity measurements on ß″-alumina isomorphs by two-probe and four-probe techniques
✍ Scribed by M.W. Breiter; H. Durakpasa; G. Dorner; P. Linhardt
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 239 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0921-5107
No coin nor oath required. For personal study only.
✦ Synopsis
7he usetidm,s,s q( two a.c. techniques .for conduczivi O' meas'ltremenZs of polycrystalline solid electrolytes was assessed, for the comparisott, two (Na, St')-fi"-alumina isomou;hs were chosen. The two-probe data ['or the 10% exchanged material itt the cell Pt/(Na, SO-/3"-alumina/Pt did not allow a simph" extrapolation procedure to determine the hulk resismzzce (sum of co'stal and grain boundary contribtttion#. .Sirnulatiott of the frequency depetulence h 3, attalogue circuils, the parameters of which were obtained @, optimization programmes, was not succes,@d eft/ten In contrast, the foltrprobe tech,fique yieMed usefid values. Both tectmiqlws yieMed similar conductivily values for the 70% exchanged material.