Journal
APPLIED PHYSICS LETTERS
Volume 103, Issue 17, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4826685
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Funding
- META-Materials Enhancement for Technological Applications Project (FP7-PEOPLE-IRSES-Marie Curie Actions) [PIRSES-GA-2010-269182]
- Italian MIUR through the FIRB Project [RBAP115AYN]
- Division of Scientific User Facilities, U.S. Department of Energy [CNMS2012-016]
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The position-dependent oxygen vacancy dynamics induced by a biased scanning probe microscopy tip in Samarium doped ceria thin films grown on MgO (100) substrates is investigated. The granularity of the samples gives rise to spatially dependent local electrochemical activity, as explored by electrochemical strain microscopy. The kinetics of the oxygen vacancy relaxation process is investigated separately for grain boundaries and grains. Higher oxygen vacancy concentration variation and slower diffusion are observed in the grain boundary regions as compared to the grains. (C) 2013 AIP Publishing LLC.
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