Contact and Current Noise in Beta Alumina and Nasicon Ceramics.

Abstract

Experimental noise spectra of beta alumina and Nasicon ceramics in contact with Sodium Iodide propylene carbonate solution have been investigated. The noise of virgin contacts to both solid electrolytes decays exponentially with time. Low noise contacts can be established in a few hours. The current noise spectra show f- 3/2 and f- 2 dependence in beta alumina and Nasicon, indicating bulk fluctuation arising from diffusion and reactions of the activated ions, respectively. Smaller correlation effects than in sodium beta alumina are observed which may be the result of the lower density of mobile sodium ions in the conducting lattice of both beta alumina and Nasicon. Keywords: Diffusion noise, Conductivity fluctuations; Superionic conductors; Single crystals.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1987
Accession Number
ADA189168

Entities

People

  • Chu K. Kuo
  • James J. Brophy

Organizations

  • University of Utah

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Arrhenius Equation
  • Carbonate Esters
  • Carbonates
  • Chemical Composition
  • Chemical Compounds
  • Chemical Reactions
  • Chemistry
  • Conductivity
  • Equations
  • Governments
  • Heat Of Activation
  • Mathematics
  • Military Research
  • Propenes
  • Single Crystals
  • Transverse
  • Universities

Fields of Study

  • Materials science
  • Physics

Readers

  • Materials Science and Engineering.