Contact Noise in Superionic Ceramics.
Interim technical rept.,
UTAH UNIV SALT LAKE CITY DEPT OF PHYSICS
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The objective of this study is to measure experimentally conductivity fluctuations in fast ionic conductors and to interpret results in terms of transport mechnisms in the solid and and at crystal-electrode interfaces. Electrode propeties are expected to introduce experimental difficulties and it is well established that the electrochemical properties of electrical contacts to solid ionic conductors are conventionally avoided by employing high frequency ac techniques. Conductivity fluctuations, on the other hand, are most easily examined under dc conditions and at low frequencies. A series of experiments has been completed on the low frequency properties of contacts to sodium and silver beta alumina ceramics which give the noise characteristics of contacts alone and demonstrate that suitable electrodes for conductivity fluctutations can be devised.
- Ceramics, Refractories and Glass
- Combustion and Ignition