Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 21, Issue 32, Pages 17662-17672Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9cp02676b
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Funding
- project Functional oxides for clean energy technologies'' (FOXCET) - Research Council of Norway [228355]
- Norwegian Centre for Transmission Electron Microscopy (NORTEM) - Research Council of Norway [197405/F50]
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We apply inline electron holography to investigate the electrostatic potential across an individual BaZr0.9Y0.1O3 grain boundary. With holography, we measure a grain boundary potential of -1.3 V. Electron energy loss spectroscopy analyses indicate that barium vacancies at the grain boundary are the main contributors to the potential well in this sample. Furthermore, geometric phase analysis and density functional theory calculations suggest that reduced atomic density at the grain boundary also contributes to the experimentally measured potential well.
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