Diffusion Noise in Annealed Na, Ag and Pb Beta Aluminas.
Abstract
Conductivity fluctuations in Lead beta' alumina arising from diffusion of the mobile ions are observed to increase linearly with annealing time at a temperature of 130 C after quenching from 550 C. Simultaneously, the conductivity as measured by Nyquist noise decreases linearly. No effect of annealing on conductivity fluctuations or conductivity is found for either sodium beta' alumina or silver beta' alumina. The increase in conductivity fluctuations for Pb beta' alumina can be interpreted in terms of a decrease in effective ion density for diffusion noise. Keywords: superionic conductors, beta alumina ceramics, electrical conductivity noise (electrical and electromagnetic). (AW).
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1988
- Accession Number
- ADA195884
Entities
People
- Chu Kun Kuo
- James J. Brophy
Organizations
- University of Utah