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Electrical properties of polycrystalline TiO2: Equilibration kinetics

Electrical properties of polycrystalline TiO2: Equilibration kinetics The equilibration kinetics was determined for high purity polycrystalline TiO2 in the temperature range of 1,123–1,323 K, within a wide range of oxygen activity, $10^{-13}\:\mathrm{Pa}< p(\mathrm{O_2})<75\:\mathrm{kPa}$ . The equilibration kinetics experiments were performed within narrow p(O2) ranges. The obtained kinetic data were used for the determination of the chemical diffusion coefficient, D chem, which exhibits a complex dependence of p(O2). The D chem data are considered in terms of the effect of defect disorder on the mass transport kinetics in the chemical potential gradient. The reported diffusion data may be used for prediction of optimized processing conditions required to impose a homogeneous distribution of oxygen activity within the TiO2 specimen. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Ionics Springer Journals

Electrical properties of polycrystalline TiO2: Equilibration kinetics

Ionics , Volume 13 (2) – Apr 26, 2007

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References (20)

Publisher
Springer Journals
Copyright
Copyright © 2007 by Springer-Verlag
Subject
Chemistry; Electrochemistry; Renewable and Green Energy; Optical and Electronic Materials; Condensed Matter Physics; Energy Storage
ISSN
0947-7047
eISSN
1862-0760
DOI
10.1007/s11581-007-0075-1
Publisher site
See Article on Publisher Site

Abstract

The equilibration kinetics was determined for high purity polycrystalline TiO2 in the temperature range of 1,123–1,323 K, within a wide range of oxygen activity, $10^{-13}\:\mathrm{Pa}< p(\mathrm{O_2})<75\:\mathrm{kPa}$ . The equilibration kinetics experiments were performed within narrow p(O2) ranges. The obtained kinetic data were used for the determination of the chemical diffusion coefficient, D chem, which exhibits a complex dependence of p(O2). The D chem data are considered in terms of the effect of defect disorder on the mass transport kinetics in the chemical potential gradient. The reported diffusion data may be used for prediction of optimized processing conditions required to impose a homogeneous distribution of oxygen activity within the TiO2 specimen.

Journal

IonicsSpringer Journals

Published: Apr 26, 2007

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