Millicontact impedance spectroscopic analysis in stabilized zirconia and gadolinia-doped ceria
- Authors
- Lee, Jong-Heun; Kim, Doo Kang; Kim, Doh-Yeon
- Issue Date
- 15-9월-2008
- Publisher
- ELSEVIER
- Keywords
- Millicontact Impedance Spectroscopy; local impedance; stabilized zirconia; gadolinia-doped ceria; grain-boundary conduction
- Citation
- SOLID STATE IONICS, v.179, no.21-26, pp.966 - 970
- Indexed
- SCIE
SCOPUS
- Journal Title
- SOLID STATE IONICS
- Volume
- 179
- Number
- 21-26
- Start Page
- 966
- End Page
- 970
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/122703
- DOI
- 10.1016/j.ssi.2008.01.030
- ISSN
- 0167-2738
- Abstract
- The spatially-resolved local impedance can be measured by 'Millicontact Impedance Spectroscopy (MIS)', which involves the use of an array of sub-millimeter-scale electrodes. In stabilized zirconia and gadolinia-doped ceria electrolytes with highly resistive grain-boundaries, MIS could measure the local impedance precisely and revealed the spatially-resolved changes in the grain-interior and grain-boundary resistivity. The validity of this technique was illustrated using the examples such as the design of a new scavenger material and an analysis of the diffusion of the siliceous phase along the grain boundary. (C) 2008 Elsevier B.V. All rights reserved.
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