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Title: Geometry of electromechanically active structures in Gadolinium - doped Cerium oxides

Journal Article · · AIP Advances
DOI:https://doi.org/10.1063/1.4952645· OSTI ID:1254031

Local distortions from average structure are important in many functional materials, such as electrostrictors or piezoelectrics, and contain clues about their mechanism of work. However, the geometric attributes of these distortions are exceedingly difficult to measure, leading to a gap in knowledge regarding their roles in electromechanical response. This task is particularly challenging in the case of recently reported non-classical electrostriction in Cerium-Gadolinium oxides (CGO), where only a small population of Ce-O bonds that are located near oxygen ion vacancies responds to external electric field. In this study, we used high-energy resolution fluorescence detection (HERFD) technique to collect X-ray absorption spectra in CGO in situ, with and without an external electric field, coupled with theoretical modeling to characterize three-dimensional geometry of electromechanically active units.

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
FG02- 03ER15476; FG02-03ER15476
OSTI ID:
1254031
Alternate ID(s):
OSTI ID: 1272367; OSTI ID: 1421040
Journal Information:
AIP Advances, Journal Name: AIP Advances Vol. 6 Journal Issue: 5; ISSN 2158-3226
Publisher:
American Institute of PhysicsCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 20 works
Citation information provided by
Web of Science

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Cited By (4)

Enhanced electro-mechanical coupling of TiN/Ce 0.8 Gd 0.2 O 1.9 thin film electrostrictor journal July 2019
Towards the surface hydroxyl species in CeO 2 nanoparticles journal January 2019
Suitability of Raman Spectroscopy for Assessing Anisotropic Strain in Thin Films of Doped Ceria journal January 2019
Investigation of periodically driven systems by x-ray absorption spectroscopy using asynchronous data collection mode journal April 2018

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