Electrical Conductivity and Phase Transition Studies in the ZrO2-CdO System
| Periodical | Defect and Diffusion Forum (Volume 329) |
|---|---|
| Main Theme | Dislocation Reactions and Stacking-Fault Energies |
| Edited by | D.J. Fisher |
| Pages | 147-157 |
| DOI | 10.4028/www.scientific.net/DDF.329.147 |
| Citation | Saba Beg et al., 2012, Defect and Diffusion Forum, 329, 147 |
| Online since | July, 2012 |
| Authors | Saba Beg, Sadaf Haneefaa |
| Keywords | Oxides, Phase Transition, X-Ray Diffraction (XRD) |
| Price | US$ 28,- |
The Solid Solution of ZrO2 : Cdo Was Prepared by the Conventional Solid-State Reaction. Effect of Dopant Concentration on the Electrical Conductivity of ZrO2 Was Studied for Different Compositions at Different Temperatures. the Conductivity Increases with the Addition of Cdo due to the Migration of Vacancies. the Conductivity Increases with Rise in Temperature up to 180°C and Thereby Decreases due to the Collapse of Fluorite Framework. A Second Rise in Conductivity at High Temperature beyond 460°C Is due to the Phase Transition of ZrO2 from Monoclinic to Tetragonal. DSC, X Ray Powder Diffraction, Impedance Measurements and FTIR Spectral Studies Were Carried Out for Confirming the Doping Effect and Transitions in ZrO2. the Addition of Cdo to Zro2 Shifted the Phase Transition of ZrO2 to Higher Temperatures as Confirmed by the DSC Results. the Occurrence of Single Semi Circle with a Low Frequency Inclined Spike Indicates that the Conductivity Is Mainly due to the Movement of Oxide Ions.
