Conductivity fluctuations in mixed Na/Ca beta alumina
Abstract
Conductivity fluctuations in mixed Na/Ca beta alumina ceramics for different values of the Na/Ca ratio are observed to be similar to diffusion noise of the mobile ions seen in Na, Ag, and Pb beta alumina. Measured noise levels increase two orders of magnitude in changing from 100 percent Na to 100 percent Ca ions in the structure. In mixed Na/Ca ceramics the noise is greater for NaI solution current electrodes than for CaBr2 solution current electrodes. These differences are attributed to different correlation effects between the mobile ions.
- Publication:
-
Technical Report
- Pub Date:
- February 1989
- Bibcode:
- 1989utah.rept.....K
- Keywords:
-
- Aluminum Oxides;
- Ceramics;
- Diffusion Electrodes;
- Mixing;
- Single Crystals;
- Ions;
- Noise Intensity;
- Solutions;
- Variations;
- Solid-State Physics