Journal article
In situ synchrotron x-ray studies of epitaxial SrCoO x films during ionic liquid gating
APL materials, v 13(6), 061106
01 Jun 2025
Abstract
The manipulation of ions in complex oxide materials can be used to mimic brain-like plasticity through changes to the resistivity of a neuromorphic device. Advances in the design of more energy efficient devices require improved understanding of how ions migrate within a material and across its interface. We investigate the exchange of oxygen and hydrogen in a model SrCoOx epitaxial film-a material that transitions between a ferromagnetic metal and antiferromagnetic insulator depending on the oxygen concentration. Changes to the film during ionic liquid gating were measured by in situ synchrotron x-ray techniques as a function of time and gate voltage, examining the reversibility of the oxide over one complete gating cycle. We find that the out-of-plane lattice constant and oxygen vacancy concentration of SrCoOx are largely reversible although changes were observed in the ordered vacancy structure. Our results provide much needed insight into electrolyte-gated phase behavior in the transition metal oxides.
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Details
- Title
- In situ synchrotron x-ray studies of epitaxial SrCoO x films during ionic liquid gating
- Creators
- Yan Li - Argonne National LaboratoryJill K. Wenderott - Argonne National LaboratoryTadesse Billo - Argonne Natl Lab, Mat Sci Div, Argonne, IL 60439 USAMaoyu Wang - Argonne National LaboratoryAlvin Chang - Oregon State UniversityHui Cao - Argonne National LaboratoryXi Yan - Argonne National LaboratoryD. Bruce Buchholz - Northwestern UniversityZhenxing Feng - Oregon State UniversityHua Zhou - Argonne National LaboratorySupratik Guha - Argonne National LaboratoryDillon D. Fong - Argonne National Laboratory
- Publication Details
- APL materials, v 13(6), 061106
- Publisher
- AIP Publishing
- Number of pages
- 7
- Grant note
- DE-AC02-05CH11231 / U.S. DOE Office of Science User Facility; United States Department of Energy (DOE) U.S. DOE, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division; United States Department of Energy (DOE) CBET-2151049; CBET-2016192 / National Science Foundation; National Science Foundation (NSF) DE-AC0206CH11357 / U.S. Department of Energy (DOE), Office of Science; United States Department of Energy (DOE) DMR-1720139 / National Science Foundation MRSEC; National Science Foundation (NSF) NSF ECCS-2025633 / Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:001510084000005
- Scopus ID
- 2-s2.0-105007696306
- Other Identifier
- 991022132152004721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied