Noise in Sodium Beta Alumina Crystals.

Abstract

Experimental current noise spectra for single crystal sodium beta alumina are essentially identical to those previously reported for polycrystalline ceramic specimens. The measured noise power is proportional to the square of the dc sample current and varies as 1.5/f, which suggests conductivity fluctuations arising from diffusion of the mobile ions. Only a small fraction of the mobile ions appear to participate in the diffusion noise process and the number is thermally activated with an activation energy of 0.8eV, in agreement with data from ceramic specimens. Additional keywords: diffusion noise; superionic conductors; experimental data. (Author).

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1985
Accession Number
ADA156025

Entities

People

  • J. J. Brophy
  • Stanley W. Smith

Organizations

  • University of Utah

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Agreements
  • California
  • Chemical Reactions
  • Chemistry
  • Conductivity
  • Crystals
  • Diffusion
  • Energy
  • Frequency
  • Governments
  • Heat Of Activation
  • Military Research
  • Polycrystals
  • Single Crystals
  • Spectra
  • United States
  • Universities

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.