Atomic-scale observation of geometric reconstruction in a fluorine-intercalated infinite layer nickelate superlattice Article Swipe
Chao Yang
,
R. A. Ortiz
,
Hongguang Wang
,
Wilfried Sigle
,
Kelvin Anggara
,
E. Benckiser
,
B. Keimer
,
Peter A. van Aken
·
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.1038/s41467-025-58646-0
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.1038/s41467-025-58646-0
Anion doping offers immense potential for tailoring material properties, but precise control over anion incorporation remains challenging due to complex synthesis and limitations in dopant detection. This study investigates F-ion intercalation within an infinite-layer NdNiO 2+ x /SrTiO 3 superlattice using a two-step process. We employ advanced four-dimensional scanning transmission electron microscopy (4D-STEM) coupled with electron energy loss spectroscopy (EELS) to map the F distribution and its impact on the atomic and electronic structure. Our observations reveal a fluorination-induced geometric reconstruction of the infinite layer structure, resulting in a more distorted orthorhombic phase compared to the pristine perovskite. F-ion are primarily located at apical polyhedral sites, with some basal sites occupation in localized regions, leading to the formation of two distinct domains. These domains reflect a competition between polyhedral distortion and Nd displacement at domain interfaces. Interestingly, we observe an anomalous structural distortion where basal site anions are displaced in the same direction as Nd atoms, potentially linked to the partial basal site F-ion occupation. This coexistence of diverse structural distortions signifies a locally disordered F-ion distribution with distinct configurations. These findings provide crucial insights into the mechanisms of anion doping at the atomic level, contributing to the design of materials with tailored functionalities.
Related Topics
Concepts
Orthorhombic crystal system
Atomic units
Superlattice
Dopant
Materials science
Crystallography
Ion
Perovskite (structure)
Intercalation (chemistry)
Doping
Scanning transmission electron microscopy
Chemical physics
Transmission electron microscopy
Condensed matter physics
Nanotechnology
Crystal structure
Chemistry
Optoelectronics
Physics
Inorganic chemistry
Organic chemistry
Quantum mechanics
Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1038/s41467-025-58646-0
- OA Status
- gold
- Cited By
- 1
- References
- 56
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4409190633
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4409190633Canonical identifier for this work in OpenAlex
- DOI
-
https://doi.org/10.1038/s41467-025-58646-0Digital Object Identifier
- Title
-
Atomic-scale observation of geometric reconstruction in a fluorine-intercalated infinite layer nickelate superlatticeWork title
- Type
-
articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2025Year of publication
- Publication date
-
2025-04-06Full publication date if available
- Authors
-
Chao Yang, R. A. Ortiz, Hongguang Wang, Wilfried Sigle, Kelvin Anggara, E. Benckiser, B. Keimer, Peter A. van AkenList of authors in order
- Landing page
-
https://doi.org/10.1038/s41467-025-58646-0Publisher landing page
- Open access
-
YesWhether a free full text is available
- OA status
-
goldOpen access status per OpenAlex
- OA URL
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https://doi.org/10.1038/s41467-025-58646-0Direct OA link when available
- Concepts
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Orthorhombic crystal system, Atomic units, Superlattice, Dopant, Materials science, Crystallography, Ion, Perovskite (structure), Intercalation (chemistry), Doping, Scanning transmission electron microscopy, Chemical physics, Transmission electron microscopy, Condensed matter physics, Nanotechnology, Crystal structure, Chemistry, Optoelectronics, Physics, Inorganic chemistry, Organic chemistry, Quantum mechanicsTop concepts (fields/topics) attached by OpenAlex
- Cited by
-
1Total citation count in OpenAlex
- Citations by year (recent)
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2025: 1Per-year citation counts (last 5 years)
- References (count)
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56Number of works referenced by this work
- Related works (count)
-
10Other works algorithmically related by OpenAlex
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