Petit, Christophe T. G. and Lan, Rong and Cowin, Peter I. and Tao, Shanwen (2010) Structure and conductivity of strontium-doped cerium orthovanadates Ce1- xSrxVO4 (0 0.175). Journal of Solid State Chemistry, 183 (6). pp. 1231-1238. ISSN 0022-4596Full text not available in this repository. (Request a copy from the Strathclyde author)
A-site substituted cerium orthovanadates, Ce1-xSrxVO4, were synthesised by solid-state reactions It was found that the solid solution limit in Ce1-xSrxVO4 is at x = 0 175. The crystal structure was analysed by X-ray diffraction and it exhibits a tetragonal zircon structure of space group I4(1)/amd (1 4 1) with a = 7 3670 (3) and c = 6.4894 (1) angstrom for Ce0 825Sr0 175VO4 The UV-vis absorption spectra indicated that the compounds have band gaps at room temperature in the range 4.5-4 6 eV Conductivity measurements were performed for the first time up to the strontium solid solution limit in air and in dry 5% H-2/Ar with conductivity values at 600 degrees C ranging from 03 to 30 mS cm(-1) in air to 30-45 mS cm(-1) in reduced atmosphere Sample Ce0 825Sr0 175VO4 is redox stable at a temperature below 600 degrees C although the conductivity is not high enough to be used as an electrode for solid oxide fuel cells.
|Keywords:||Ce1-xSrxVO4, conductivity, solid solution, cerium orthovanadates, crystal structure, redox behavior, oxides, CEVO4, CA, SR, transport, stability, vanadates, TB, Chemical engineering, Materials Chemistry, Ceramics and Composites, Physical and Theoretical Chemistry, Electronic, Optical and Magnetic Materials, Inorganic Chemistry, Condensed Matter Physics|
|Subjects:||Technology > Chemical engineering|
|Department:||Faculty of Engineering > Chemical and Process Engineering|
|Depositing user:||Pure Administrator|
|Date Deposited:||25 Oct 2011 12:10|
|Last modified:||04 May 2016 19:53|