USE OF SOLID STATE ELECTROCHEMICAL TRANSDUCER TECHNIQUES FOR CONTROL OF THE POINT DEFECT STRUCTURE IN SOLIDS

Abstract

Studies of the crystal structure and ionic transport in materials containing beta alumina and related phases are reported. Beta alumina has the nominal formula MAl11O17, where M is Li, Na, K, NH4, Ag, or Tl. The structure of the adjacent M2O-rich phase was studied and found to have an analogous structure consisting of dense blocks with the gamma alumina structure separated by low-density bridging layers containing M ions. Unusually rapid ionic transport along these bridging layers was found, and defect models appropriate to such systems discussed.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1969
Accession Number
AD0693158

Entities

People

  • M. S. Whittingham
  • R. A. Huggins
  • R. W. Helliwell

Organizations

  • Stanford University

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Alkali Metals
  • Aluminum Oxides
  • Chemical Reactions
  • Chemistry
  • Crystal Structure
  • Crystals
  • Diffraction
  • Films
  • High Temperature
  • Impurities
  • Materials
  • Materials Science
  • Measurement
  • Oxides
  • Phase Diagrams
  • Point Defects
  • Single Crystals

Fields of Study

  • Materials science

Readers

  • Electrochemical Engineering/ Fuel Cell Technologies
  • Materials Science and Engineering.
  • Powder metallurgy of Titanium alloys.