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Structural and electrical properties of Ce-0.75(Gd0.95-xSrxCa0.05)(0.25)O2-delta thick film electrolyte
- Authors
- Lee, Seung-Hwan; Kim, Hyun-Ju; Kim, Seung-Hyun; Kim, Hong-Ki; Lee, Sung-Gap; Yoon, Jung-Rag; Lee, Young-Hie
- Issue Date
- Dec-2013
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Ceramics; Impedance spectroscopy; X-ray diffraction; Electrical properties; Ionic conductivity
- Citation
- MATERIALS RESEARCH BULLETIN, v.48, no.12, pp 5008 - 5012
- Pages
- 5
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- MATERIALS RESEARCH BULLETIN
- Volume
- 48
- Number
- 12
- Start Page
- 5008
- End Page
- 5012
- ISSN
- 0025-5408
1873-4227
- Abstract
- The effects of Sr doping on the electrical properties of Ce-0.75(Gd0.95-xSrxCa0.05)(0.25)O2-delta (x = 0, 0.01, 0.02, 0.03, 0.04, 0.05 mol%) electrolytes thick films were investigated. The samples sintered at 1400 degrees C for 8 h. X-ray diffraction (XRD) showed typical XRD patterns of a cubic fluorite structure, and the ionic conductivity was examined by AC impedance spectroscopy. From the experimental results, it was observed that Ce-0.75(Gd0.95-xSrxCa0.05)(0.25)O2-delta (x = 0.04 mol%) electrolytes thick film have higher conductivity and minimum activation energy at 600 degrees C. This is explained in terms of the increased in the oxygen vacancy concentration at the grain boundary. (C) 2013 Elsevier Ltd. All rights reserved.
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