Chemical and phase inhomogeneity in LaNiO3 electrodes prepared by chemical solution deposition
Abstract
The structure of lanthanum nickelate (LNO) thin film electrodes prepared by chemical solution deposition has been investigated. Features of LNO microstructure have been studied using high-resolution transmission electron microscopy techniques, electron diffraction, and elemental mapping by energy dispersive X-ray analysis. Structure evolution of LNO after crystallization in the temperature range of 550 ÷ 800 °C has been visualized. Chemical and phase delamination within each sublayer was revealed in the LNO structure over the entire temperature range. Nanograins of Ni3O4 (С2/m), La2O3 (С2/m), LaNiO3 (Pm3¯m), and La2Ni2O5 (С2/m) phases were identified in the annealed LNO layer.
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If drying proceeds in 300-450 °C range, interaction between metal oxide molecules occurs and crystallization creates not only LaNiO3 but also Ni3O4, La2O3 and La2Ni2O5 phases.
“If drying proceeds in this temperature range, an interaction between metal oxide molecules occurs and crystallization creates not only LaNiO3 (s.g. Pm3¯m), but also Ni3O4 (C2/m), La2O3 (C2/m) and La2Ni2O5 (C2/m) phases [71].”
From Control of Columnar Grain Microstructure in CSD LaNiO3 Films (2023) · cites this paper as [71]
In case of hard-baking at 300-450 °C, intermediate phases are created and final annealing at 650 °C gives multiphase structure.
“In contrast, in the case of hard-baking at 300–450 °C, intermediate phases are created and final annealing at 650 °C gives the multiphase structure, as it was mentioned before [71].”
From Control of Columnar Grain Microstructure in CSD LaNiO3 Films (2023) · cites this paper as [71]
Cites
Rare-earth nickelates <i>R</i> NiO <sub>3</sub> : thin films and heterostructures
Catalano, S., Gibert, M., Fowlie, J., Íñiguez, J., Triscone, J.-M., & Kreisel, J. (2018) · Reports on Progress in Physics · doi:10.1088/1361-6633/aaa37a · Cited by 453 · see citing works
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Control of Columnar Grain Microstructure in CSD LaNiO3 Films
Atanova, A. V., Seregin, D. S., Zhigalina, O. M., Khmelenin, D. N., Orlov, G. A., Turkina, D. I., Sigov, A. S., & Vorotilov, K. A. (2023) · Molecules · doi:10.3390/molecules28041938 · Cited by 5 · see citing works
Self-citation
- Authors
- Atanova, A. V., Zhigalina, O. M., Khmelenin, D. N., Kotova, N. M., Seregin, D. S., & Vorotilov, K. A.
- Affiliations
- FSRC “Crystallography and Photonics” RAS, Moscow, Russia
- Bauman Moscow State Technical University (RU)
- Federal Scientific Research Centre Crystallography and Photonics (RU)
- MIREA - Russian Technological University, Moscow, Russia
- MIREA - Russian Technological University (RU)
- Venue
- Ferroelectrics
- Publisher
- Informa UK Limited
- Published
- 2021-04-04
- Volume
- 574
- Issue
- 1
- Pages
- 29-36
- ISSN
- 0015-0193 (ISSN-L)
- 1563-5112
- OpenAlex
- W3158564484
- Cited by
- 3
- References
- 1
- Citations by year
- 2024: 1 · 2023: 1 · 2022: 1
- FWCI
- 0.23
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Ferroelectrics (publishedVersion)
- Funders
- Ministry of Science and Higher Education program (0706-2020-0022)
- RFBR (19-29-03058)
- Crystallography and Photonics (RFMEFI62119X0035)
- Topics
- Physical Sciences › Materials Science › Materials Chemistry › Ferroelectric and Piezoelectric Materials
- Physical Sciences › Materials Science › Materials Chemistry › Advancements in Solid Oxide Fuel Cells
- Physical Sciences › Materials Science › Materials Chemistry › Electronic and Structural Properties of Oxides
- Keywords
- LaNiO3, LaNiO3 thin films, chemical solution deposition, phase inhomogeneity, compositional heterogeneity, microstructure, crystallization, lanthanum oxide, annealing, electrode structure
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