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% Na to 100% 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. Diffusion noise, Conductivity, Fluctuations, Superionic conductors, Beta alumina ceramics, Single crystals and mixed alkali effect.

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Document Details

Document Type
Technical Report
Publication Date
Feb 17, 1989
Accession Number
ADA205416

Entities

People

  • Chu K. Kuo
  • James J. Brophy

Organizations

  • University of Utah

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Calcium
  • Carbonate Esters
  • Chemical Compounds
  • Chemistry
  • Conductivity
  • Crystal Structure
  • Crystals
  • Frequency
  • Heat Treatment
  • Ion Density
  • Mathematics
  • Military Research
  • Single Crystals
  • Spectra
  • Statistical Analysis
  • Statistics
  • Two Dimensional

Fields of Study

  • Materials science

Readers

  • Acoustics.
  • Materials Science and Engineering.