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.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1989
Accession Number
ADA205869

Entities

People

  • James J. Brophy

Organizations

  • University of Utah

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Communities of Interest

  • Energy and Power Technologies

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  • Carbonate Esters
  • Chemical Compounds
  • Chemistry
  • Classification
  • Conductivity
  • Contracts
  • Diffusion
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Fields of Study

  • Materials science

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