AN EXPERIMENTAL STUDY OF DEFECT ORDERING AND TRANSPORT PHENOMENA IN NONSTOICHIOMETRIC METAL OXIDES.

Abstract

Experimental studies of transport phenomena and X-ray diffraction were carried out on reduced crystals of titanium oxide. Titanium oxide crystals were reduced by heating in vacuum with titanium metal to compositions between TiO(1.89) and TiO2. X-ray diffraction showed well-developed satellites to Bragg reflection spots at x = 1.98 (x in TiOx). Electrical resistivity was measured as a function of temperature at TiO(1.9700) and TiO(1.9830). At those compositions the electrical resistivity varied with positive temperature coefficient in a narrow range between 2.0 and 2.8 ohm cm in a temperature range from 200 to 800C. Thermal conductivity was measured between 4.2 and 100K and showed a maximum near 12K. (Author)

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1969
Accession Number
AD0687737

Entities

People

  • Clement J. Kevane

Organizations

  • Arizona State University

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Coefficients
  • Conductivity
  • Diffraction
  • Metal Oxides
  • Metals
  • Oxides
  • Temperature Coefficients
  • Thermal Conductivity
  • Titanium
  • Titanium Oxides
  • Transport Ships
  • X Rays
  • X-Ray Diffraction

Fields of Study

  • Materials science

Readers

  • Electrical Engineering
  • Materials Science and Engineering.

Technology Areas

  • Space