CATION AND HOLE DIFFUSION IN FEO, COO, AND NIO.

Abstract

The cation diffusion coefficients and hole conductivity data in FeO, CoO, and NiO are correlated, assuming a vacancy mechanism for cation diffusion and a hopping mechanism for hole diffusion. The cation diffusion coefficients in Fe(1-x)O, Co(1-x)O, and Ni(1-x)O are shown to be proportional to the concentration of vacancies x in the cation lattice with identical pre-exponential and exponential terms. The hole diffusion coefficients have the same pre-exponential term, but the activation energy depends on the bonding of the hole to the respective ion. Only one of the two holes created by the introduction of a cation vacancy takes place in the conduction process. (Author)

Document Details

Document Type
Technical Report
Publication Date
May 01, 1967
Accession Number
AD0816623

Entities

People

  • Michael Hoch

Organizations

  • University of Cincinnati

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Coefficients
  • Conductivity
  • Diffusion
  • Diffusion Coefficient
  • Energy
  • Heat Of Activation

Fields of Study

  • Materials science

Readers

  • Combustion science or combustion engineering.
  • Electrochemical Engineering/ Fuel Cell Technologies
  • Semiconductor Device Technology