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Issue 32, 2019
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Investigation of the electrostatic potential of a grain boundary in Y-substituted BaZrO3 using inline electron holography

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Abstract

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.

Graphical abstract: Investigation of the electrostatic potential of a grain boundary in Y-substituted BaZrO3 using inline electron holography

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Supplementary files

Article information


Submitted
11 May 2019
Accepted
17 Jul 2019
First published
25 Jul 2019

Phys. Chem. Chem. Phys., 2019,21, 17662-17672
Article type
Paper

Investigation of the electrostatic potential of a grain boundary in Y-substituted BaZrO3 using inline electron holography

T. Bondevik, H. H. Ness, C. Bazioti, T. Norby, O. M. Løvvik, C. T. Koch and Ø. Prytz, Phys. Chem. Chem. Phys., 2019, 21, 17662
DOI: 10.1039/C9CP02676B

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