Chemical and phase inhomogeneity in LaNiO3 electrodes prepared by chemical solution deposition. Issue 1 (4th April 2021)

• Record Type: Journal Article
• Authors: Atanova, A. V.; Zhigalina, O. M.; Khmelenin, D. N.; Kotova, N. M.; Seregin, D. S.; Vorotilov, K. A.
• Is Part Of: Ferroelectrics. Volume 574:Issue 1(2021)
• Page Start: 29
• Page End: 36
• Publication Date: 2021-04-04
• Subjects: Lanthanum nickelate -- chemical solution deposition -- transmission electron microscopy -- energy dispersive X-ray analysis -- phases -- oxides; Ferroelectricity -- Periodicals; Ferroelectric crystals -- Periodicals; 537
• DOI: 10.1080/00150193.2021.1888046
• Languages: English
• ISSNs: 0015-0193

Abstract

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 Ni3 O4 (С2/m), La2 O3 (С2/m), LaNiO3 ( P m 3 ¯ m ), and La2 Ni2 O5 (С2/m) phases were identified in the annealed LNO layer.