AN EXPERIMENTAL STUDY OF DEFECT ORDERING AND TRANSPORT PHENOMENA IN NONSTOICHIOMETRIC METAL OXIDES.
Annual summary rept. 1 Apr 68-31 Mar 69,
ARIZONA STATE UNIV TEMPE
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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 TiO1.89 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 TiO1.9700 and TiO1.9830. 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
- Solid State Physics