The Dynamics of Oxygen Ion Exchange in Epitaxial Strontium Cobaltite Bilayers
Abstract
Abstract The exchange of ions across interfaces is key to the field of iontronics, where the properties of the device can be altered by the local ion concentration. This study investigates a complex oxide system where structural and electronic phase transitions can be driven by changes in the concentration of oxygen ions. In situ coherent X‐ray studies are conducted on epitaxial bilayers of insulating SrCoO 2.5 and metallic SrCoO 3 − δ . The diffusion of oxygen ions across the bilayer is studied with X‐ray photon correlation spectroscopy to capture the dynamical behavior of the interface in reducing and oxidizing environments. The behavior is strongly asymmetric, with much slower dynamics appearing in reducing versus oxidizing environments. According to the correlation functions determined from different points in reciprocal space, this study finds that the dynamics near the center of the SrCoO 2.5 crystal are generally similar to those near the heterointerfaces. The results suggest that the interface is stable and reversible, making SrCoO x a model system for the study of iontronic behavior.
- Authors:
-
[1];
[1]
- Materials Science Division Physical Sciences and Engineering Argonne National Laboratory Lemont IL 60439 USA
- X‐ray Science Division Advanced Photon Source Argonne National Laboratory Lemont IL 60439 USA
- Materials Science and Engineering Northwestern University Evanston IL 60201 USA
- Materials Science Division Physical Sciences and Engineering Argonne National Laboratory Lemont IL 60439 USA, Pritzker School of Molecular Engineering University of Chicago Chicago IL 60637 USA
- Publication Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
- Sponsoring Org.:
- USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); National Science Foundation (NSF)
- OSTI Identifier:
- 1986392
- Alternate Identifier(s):
- OSTI ID: 1986393; OSTI ID: 2339565
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Published Article
- Journal Name:
- Advanced Materials Interfaces
- Additional Journal Information:
- Journal Name: Advanced Materials Interfaces Journal Volume: 10 Journal Issue: 21; Journal ID: ISSN 2196-7350
- Publisher:
- Wiley Blackwell (John Wiley & Sons)
- Country of Publication:
- Germany
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; bilayers; oxide heterostructure; strontium cobaltite; X-ray photon correlation spectroscopy
Citation Formats
Wenderott, Jill K., Dufresne, Eric M., Li, Yan, Cao, Hui, Zhang, Qingteng, Narayanachari, K. V. L. V., Buchholz, D. Bruce, Guha, Supratik, and Fong, Dillon D. The Dynamics of Oxygen Ion Exchange in Epitaxial Strontium Cobaltite Bilayers. Germany: N. p., 2023.
Web. doi:10.1002/admi.202300127.
Wenderott, Jill K., Dufresne, Eric M., Li, Yan, Cao, Hui, Zhang, Qingteng, Narayanachari, K. V. L. V., Buchholz, D. Bruce, Guha, Supratik, & Fong, Dillon D. The Dynamics of Oxygen Ion Exchange in Epitaxial Strontium Cobaltite Bilayers. Germany. https://doi.org/10.1002/admi.202300127
Wenderott, Jill K., Dufresne, Eric M., Li, Yan, Cao, Hui, Zhang, Qingteng, Narayanachari, K. V. L. V., Buchholz, D. Bruce, Guha, Supratik, and Fong, Dillon D. Thu .
"The Dynamics of Oxygen Ion Exchange in Epitaxial Strontium Cobaltite Bilayers". Germany. https://doi.org/10.1002/admi.202300127.
@article{osti_1986392,
title = {The Dynamics of Oxygen Ion Exchange in Epitaxial Strontium Cobaltite Bilayers},
author = {Wenderott, Jill K. and Dufresne, Eric M. and Li, Yan and Cao, Hui and Zhang, Qingteng and Narayanachari, K. V. L. V. and Buchholz, D. Bruce and Guha, Supratik and Fong, Dillon D.},
abstractNote = {Abstract The exchange of ions across interfaces is key to the field of iontronics, where the properties of the device can be altered by the local ion concentration. This study investigates a complex oxide system where structural and electronic phase transitions can be driven by changes in the concentration of oxygen ions. In situ coherent X‐ray studies are conducted on epitaxial bilayers of insulating SrCoO 2.5 and metallic SrCoO 3 − δ . The diffusion of oxygen ions across the bilayer is studied with X‐ray photon correlation spectroscopy to capture the dynamical behavior of the interface in reducing and oxidizing environments. The behavior is strongly asymmetric, with much slower dynamics appearing in reducing versus oxidizing environments. According to the correlation functions determined from different points in reciprocal space, this study finds that the dynamics near the center of the SrCoO 2.5 crystal are generally similar to those near the heterointerfaces. The results suggest that the interface is stable and reversible, making SrCoO x a model system for the study of iontronic behavior.},
doi = {10.1002/admi.202300127},
journal = {Advanced Materials Interfaces},
number = 21,
volume = 10,
place = {Germany},
year = {Thu Jun 22 00:00:00 EDT 2023},
month = {Thu Jun 22 00:00:00 EDT 2023}
}
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