Contact Noise in Sodium Beta Alumina.
Abstract
Contact noise in sodium beta alumina cels has been studies by voltage fluctuation measurements at frequencies 10,000 to 30,000 Hx in in the presence and absence of current. A propylene carbonate solution of NaI forms a low noise contanct with beta alumina ceramic electrolyte. The noise spectra for aqueous solution of NaNO3, silver amalgam and newly prepared mercury electrodes, however, show excess noise at low frequencies and exhibit f(-2) spectra that suggests nonequilibrium reactions occur at the interface. The current noise of both the aqueous and propylene carbonate solution electrodes displays f/1.5 dependence characteristic of diffusion noise. Keywords: Diffusion; Noise; Conductivity fluctuations; Supersonic; Conductors; Alumina; Ceramics; Crystals.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1987
- Accession Number
- ADA181128
Entities
People
- Chu Kun Kuo
- James J. Brophy
Organizations
- University of Utah