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