Current & Thermal Noise in Mixed Na/Ag Beta Alumina
Abstract
Current noise in mixed-ion Na/Ag Beta alumina ceramics is characteristic of conductivity fluctuations due to diffusion noise of the mobile ions as previously observed in Na, Ag, and Pb Beta alumina single-ion conductors and for mixed-ion Na/Ca Beta alumina. The measured diffusion noise levels are greater for current injection of Ag ions from AgNO3 solution electrodes. Room temperature conductivities calculated from thermal noise measurements are the same for both Na and Ag electrodes and show a strong mixed alkali effect. Correlation effects between the mobile ions are the same for both Na and Ag ion injection and are strongest near the 50/50 concentration ratio. Diffusion noise, Mobile ions, Conductivity fluctuations, Beta alumina single-ion conductors, Mixed alkali effect.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1989
- Accession Number
- ADA205869
Entities
People
- James J. Brophy
Organizations
- University of Utah