Accession Number : AD0687737

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

Descriptive Note : Annual summary rept. 1 Apr 68-31 Mar 69,

Corporate Author : ARIZONA STATE UNIV TEMPE

Personal Author(s) : Kevane,Clement J.

Report Date : APR 1969

Pagination or Media Count : 17

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)

Descriptors :   (*OXIDES, *TRANSPORT PROPERTIES), (*TITANIUM COMPOUNDS, TRANSPORT PROPERTIES), (*CRYSTAL DEFECTS, OXIDES), METALS, X RAY DIFFRACTION, THERMAL CONDUCTIVITY

Subject Categories : Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE