skip to main content

SciTech ConnectSciTech Connect

Title: Electrical and dielectric properties of ZnO and CeO{sub 2} doped ZrTi{sub 2}O{sub 6} ceramic

Zirconium oxide (ZrO{sub 2}) and titanium dioxide (TiO{sub 2}) are the important catalyst supports, since it has acidic and basic properties. The intermediate phase zirconium titanate ZrTi{sub 2}O{sub 6}, which is a solid solution with Zr:Ti ratio 1:2 has outstanding dielectric properties. The effects of doping of ZnO and CeO{sub 2} on the dielectric and electrical properties of ZrTi{sub 2}O{sub 6} ceramic are investigated. On adding 0.5 wt% ZnO, the dielectric constant is increased but, on adding CeO{sub 2}, the dielectric constant is decreased. The bulk density of pure sample sintered at 1530 °C is 91% of theoretical density while that of the doped samples sintered at 1450 °C is more than 94% of theoretical density. Scanning electron micrographs reveal that the samples are well sintered with minimum porosity. The semicircle behavior in the Cole-Cole plots at room temperature reveals that the samples are good ionic conductor. The induced impedance is reduced for doped samples and this can be used as a material for electrolyte in Solid Oxide Fuel Cell.
Authors:
; ;  [1] ;  [2]
  1. Department of Physics, Mar Ivanios College, Thiruvananthapuram 695015 (India)
  2. Department of Physics, Mar Ivanios College, Thiruvananthapuram 695015, India and Department of Physics, St. John's College, Anchal, Kollam 691306 (India)
Publication Date:
OSTI Identifier:
22263994
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1576; Journal Issue: 1; Conference: OMTAT 2013: 2. international conference on optoelectronic materials and thin films for advanced technology, Kochi, Kerala (India), 3-5 Jan 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; BULK DENSITY; CATALYST SUPPORTS; CERAMICS; CERIUM OXIDES; DIELECTRIC MATERIALS; DOPED MATERIALS; ELECTRIC CONDUCTORS; ELECTROLYTES; ELECTRON SCANNING; PERMITTIVITY; POROSITY; SOLID OXIDE FUEL CELLS; SOLID SOLUTIONS; TITANATES; TITANIUM OXIDES; ZINC OXIDES; ZIRCONIUM; ZIRCONIUM OXIDES